For Sale USA

Knex

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Knex for sale on largest auction and classifieds sites

Home / Building Toys / Knex refurbished & used for sale | For Sale USA
300 micro knex - 300, &

300 micro knex - 300, &

$14.84
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Nex huge lot - lot, of

Nex huge lot - lot, of

$129.00
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Nex sealed roller coaster - sealed,

Nex sealed roller coaster - sealed,

$199.95
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Vintage knex hyperspace - vintage,

Vintage knex hyperspace - vintage,

$50.00
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500 knex rods connectors - 500, &

500 knex rods connectors - 500, &

$33.74
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Huge knex bulk - sorted, lot

Huge knex bulk - sorted, lot

$200.00
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Nex ball tower - big,

Nex ball tower - big,

$159.99
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200 knex rods mixed standard - 200,

200 knex rods mixed standard - 200,

$17.95
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Nex angry birds mission - birds,

Nex angry birds mission - birds,

$49.95
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600 knex rods connectors - 600,

600 knex rods connectors - 600,

$44.13
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500 mixed knex pieces - mixed,

500 mixed knex pieces - mixed,

$29.95
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200 knex rods connectors - 200,

200 knex rods connectors - 200,

$17.95
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Knex mario kart wario - wario,

Knex mario kart wario - wario,

$8.79
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Nex designer choice - k’nex, designer's

Nex designer choice - k’nex, designer's

$34.99
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Nex education knex - k'nex,

Nex education knex - k'nex,

$49.81
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Knex motor pack 80011 - knex,

Knex motor pack 80011 - knex,

$69.99
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Nex 79320 stem - 79320, explorations

Nex 79320 stem - 79320, explorations

$19.95
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Knex 100 black chain - 100,

Knex 100 black chain - 100,

$12.99
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500 nex black rod - rod, end

500 nex black rod - rod, end

$20.63
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Nex mecha strike - k’nex,

Nex mecha strike - k’nex,

$39.99
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Nex black rods - black,

Nex black rods - black,

$15.15
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Nex ballbuster ball - ballbuster,

Nex ballbuster ball - ballbuster,

$487.46
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Nex balls red - red, yellow

Nex balls red - red, yellow

$26.58
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440 orange hard case - orange, knex

440 orange hard case - orange, knex

$35.43
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Nex lot bulk bundle - lot,

Nex lot bulk bundle - lot,

$30.00
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Nex neon yellow - k'nex,

Nex neon yellow - k'nex,

$17.81
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1992 nex helicopter - k'nex,

1992 nex helicopter - k'nex,

$20.00
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Nex white 8 way - (100), 8‑way

Nex white 8 way - (100), 8‑way

$33.20
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2005 nex corkscrew canyon - 2005,

2005 nex corkscrew canyon - 2005,

$144.49
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Lot nex 4000 pieces 17 - 4000,

Lot nex 4000 pieces 17 - 4000,

$150.00
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Vintage knex tough trucks - knex,

Vintage knex tough trucks - knex,

$9.95
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New knex wheel drive - knex, 4

New knex wheel drive - knex, 4

$30.00
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Nex new battery powered - k'nex,

Nex new battery powered - k'nex,

$17.81
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Nex new track tube - new, huge

Nex new track tube - new, huge

$20.63
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Nex white 8 position - k'nex,

Nex white 8 position - k'nex,

$18.79
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Knex narrow tires moto - tires, 2"

Knex narrow tires moto - tires, 2"

$11.87
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Nex silver dark gray - (400), k'nex

Nex silver dark gray - (400), k'nex

$30.97
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Nex granite gray - granite,

Nex granite gray - granite,

$16.95
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2001 nex xtreme - k'nex,

2001 nex xtreme - k'nex,

$24.99
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Knex nascar dale earnhardt - knex,

Knex nascar dale earnhardt - knex,

$30.00
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Knex family guy series - knex,

Knex family guy series - knex,

$9.95
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5lb various mixed lot of - 1.5lb.+,

5lb various mixed lot of - 1.5lb.+,

$23.70
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Nex power spring - power,

Nex power spring - power,

$12.12
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Nex motorized models - k’nex,

Nex motorized models - k’nex,

$45.00
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Nex big ball factory - k’nex, 63045

Nex big ball factory - k’nex, 63045

$159.99
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Knex red box hard - red,

Knex red box hard - red,

$9.99
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Nex white 8 way - (1),

Nex white 8 way - (1),

$1.00
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500 rare nex orange - k'nex,

500 rare nex orange - k'nex,

$23.45
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Nex narrow moto - (4), k’nex

Nex narrow moto - (4), k’nex

$11.87
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Nex motor worm gear - motor,

Nex motor worm gear - motor,

$39.95
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Nex white 8 way - (50), 8‑way

Nex white 8 way - (50), 8‑way

$19.95
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Brand new factory - brand,

Brand new factory - brand,

$369.95
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Knex neon yellow transition - knex,

Knex neon yellow transition - knex,

$6.99
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Knex 375 deluxe building - 375, pc

Knex 375 deluxe building - 375, pc

$45.00
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Micro knex transition - knex,

Micro knex transition - knex,

$12.75
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Nex space shuttle pcs - k'nex,

Nex space shuttle pcs - k'nex,

$8.95
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Nex bulk lot parts pieces - parts,

Nex bulk lot parts pieces - parts,

$39.95
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Nex green coaster - (100),

Nex green coaster - (100),

$20.63
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Nex rod connector - rod, &

Nex rod connector - rod, &

$14.95
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Nex yellow 5 - k’nex,

Nex yellow 5 - k’nex,

$11.87
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Nex blue mix 7 - (50), k’nex

Nex blue mix 7 - (50), k’nex

$11.87
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Big lot pounds - of, 2+

Big lot pounds - of, 2+

$12.00
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100 knex rods connectors - knex,

100 knex rods connectors - knex,

$13.95
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New rare knex orange - new,

New rare knex orange - new,

$14.95
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Knex 150 random - knex, standard

Knex 150 random - knex, standard

$11.99
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Bundle k nex - bundle, k’nex

Bundle k nex - bundle, k’nex

$26.00
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Nex 4 - (300), k’nex

Nex 4 - (300), k’nex

$14.95
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Nex red silver - k'nex,

Nex red silver - k'nex,

$14.99
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Nex education - k’nex,

Nex education - k’nex,

$29.95
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200 nex connectors mix lot - k'nex,

200 nex connectors mix lot - k'nex,

$17.95
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Nex balls yellow - (8), k’nex

Nex balls yellow - (8), k’nex

$15.93
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Nex bulk lot mixed rods - 5, lb

Nex bulk lot mixed rods - 5, lb

$39.99
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Nex silver spacers - (100),

Nex silver spacers - (100),

$12.95
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Nex rippin rocket - k'nex, purple

Nex rippin rocket - k'nex, purple

$13.95
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Nex thrill rides - k'nex,

Nex thrill rides - k'nex,

$51.99
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Nex volt motor - 12,

Nex volt motor - 12,

$39.43
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You choose nex - choose, k'nex

You choose nex - choose, k'nex

$3.25
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Nex 100 unique - k’nex,

Nex 100 unique - k’nex,

$39.95
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Nex 63147 hyperspace - k'nex,

Nex 63147 hyperspace - k'nex,

$50.00
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Bundle k nex - (449),

Bundle k nex - (449),

$20.00
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Knex mid gray rods - gray, 7.5

Knex mid gray rods - gray, 7.5

$13.99
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Nex gray way 3d - 4‑way,

Nex gray way 3d - 4‑way,

$39.95
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Nex roller coaster track - k'nex,

Nex roller coaster track - k'nex,

$14.97
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Nex bulk lot - building, pieces

Nex bulk lot - building, pieces

$30.00
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Nex flying saucer - k,

Nex flying saucer - k,

$24.99
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Nex red medium spur - red,

Nex red medium spur - red,

$16.00
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Knex parts pieces rods - rods, lot

Knex parts pieces rods - rods, lot

$29.99
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100 micro knex - knex, rods

100 micro knex - knex, rods

$13.95
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300 knex dark green rods - 300,

300 knex dark green rods - 300,

$13.45
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Nex thrill rides vulture s - thrill, vulture's

Nex thrill rides vulture s - thrill, vulture's

$49.99
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Nex red 3 - (100), 3‑way

Nex red 3 - (100), 3‑way

$9.45
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Knex panels square triangle - 25,

Knex panels square triangle - 25,

$16.99
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Knex motor black - motor, battery

Knex motor black - motor, battery

$19.95
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Nex orange 8 track - k'nex,

Nex orange 8 track - k'nex,

$12.98
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Nex construction building - k'nex,

Nex construction building - k'nex,

$34.99
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New ferris wheel - wheel, building

New ferris wheel - wheel, building

$78.18
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📊96 listings · from $1 · avg $43.13
⚠️ These listings were last updated more than 15 days ago. Search for fresh listings

Browse 96 knex listings currently in our index. Prices range from $1 to $487.46, with an average of $43.13. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about knex →

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< $25 $25 – $50 $50 – $100 $100 – $200 $200 – $500 > $500

Everything you need to know about knex

Whether you are looking for a brand-new or second-hand knex, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $1, while premium listings can reach $487.46 — giving you a wide budget spread to work with. The average price of $43.13 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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