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 rods - 300,

300 micro knex rods - 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 - k'nex,

Nex sealed roller coaster - k'nex,

$199.95
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Vintage knex hyperspace - vintage,

Vintage knex hyperspace - vintage,

$50.00
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500 knex rods - knex, mix

500 knex rods - knex, mix

$33.74
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Huge knex bulk sorted - huge, lot

Huge knex bulk sorted - huge, lot

$200.00
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Nex ball tower big - ball,

Nex ball tower big - ball,

$159.99
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200 knex rods - rods, standard

200 knex rods - rods, standard

$17.95
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Nex angry birds mission - k'nex,

Nex angry birds mission - k'nex,

$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 - 500,

500 mixed knex pieces - 500,

$29.95
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200 knex rods connectors - rods,

200 knex rods connectors - rods,

$17.95
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Knex mario kart wario - knex,

Knex mario kart wario - knex,

$8.79
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Nex designer choice - k’nex,

Nex designer choice - k’nex,

$34.99
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Nex education knex - knex,

Nex education knex - knex,

$49.81
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Knex motor pack - pack, 80011

Knex motor pack - pack, 80011

$69.99
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Nex 79320 stem - stem, explorations

Nex 79320 stem - stem, 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 - k'nex,

500 nex black rod - k'nex,

$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 - k'nex,

Nex ballbuster ball - k'nex,

$487.46
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Nex balls red yellow - balls,

Nex balls red yellow - balls,

$26.58
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440 orange hard - orange,

440 orange hard - orange,

$35.43
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Nex lot bulk - bulk, bundle

Nex lot bulk - bulk, bundle

$30.00
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Nex neon yellow - (100),

Nex neon yellow - (100),

$17.81
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1992 nex helicopter - 1992, k'nex

1992 nex helicopter - 1992, k'nex

$20.00
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Nex white 8 way - k’nex, 8‑way

Nex white 8 way - k’nex, 8‑way

$33.20
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2005 nex corkscrew canyon - 2005, k'nex

2005 nex corkscrew canyon - 2005, k'nex

$144.49
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Lot nex 4000 pieces - k'nex, 17

Lot nex 4000 pieces - k'nex, 17

$150.00
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Vintage knex tough trucks 1047 - tough,

Vintage knex tough trucks 1047 - tough,

$9.95
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New knex wheel - new, 4

New knex wheel - new, 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 - new,

Nex new track - new,

$20.63
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Nex white 8 position - white,

Nex white 8 position - white,

$18.79
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Knex narrow tires moto - narrow,

Knex narrow tires moto - narrow,

$11.87
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Nex silver dark gray - (400),

Nex silver dark gray - (400),

$30.97
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Nex granite gray - (264),

Nex granite gray - (264),

$16.95
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2001 nex xtreme slam - k'nex,

2001 nex xtreme slam - k'nex,

$24.99
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Knex nascar dale earnhardt - knex, jr

Knex nascar dale earnhardt - knex, jr

$30.00
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Knex family guy series blind - series, 1

Knex family guy series blind - series, 1

$9.95
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5lb various mixed lot - various, of

5lb various mixed lot - various, of

$23.70
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Nex power spring - k'nex,

Nex power spring - k'nex,

$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 - big,

Nex big ball factory - big,

$159.99
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Knex red box - red,

Knex red box - red,

$9.99
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Nex white 8 way - (1), 8‑way

Nex white 8 way - (1), 8‑way

$1.00
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500 rare nex - 500, orange

500 rare nex - 500, orange

$23.45
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Nex narrow moto - k’nex, 2"

Nex narrow moto - k’nex, 2"

$11.87
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Nex motor worm gear - ac, w/

Nex motor worm gear - ac, w/

$39.95
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Nex white 8 way - k’nex,

Nex white 8 way - k’nex,

$19.95
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Brand new factory - brand, sealed

Brand new factory - brand, sealed

$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 - 30,

Micro knex transition - 30,

$12.75
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Nex space shuttle - shuttle, 60

Nex space shuttle - shuttle, 60

$8.95
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Nex bulk lot - lot, w/

Nex bulk lot - lot, w/

$39.95
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Nex green coaster - k'nex,

Nex green coaster - k'nex,

$20.63
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Nex rod connector - k’nex, &

Nex rod connector - k’nex, &

$14.95
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Nex yellow 5 way - (100),

Nex yellow 5 way - (100),

$11.87
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Nex blue mix 7 way - mix, 7‑way

Nex blue mix 7 way - mix, 7‑way

$11.87
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Big lot pounds of k - big, 2+

Big lot pounds of k - big, 2+

$12.00
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100 knex rods connectors - rods,

100 knex rods connectors - rods,

$13.95
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New rare knex orange curved - 20,

New rare knex orange curved - 20,

$14.95
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Knex 150 random - ,

Knex 150 random - ,

$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), 3/4"

Nex 4 - (300), 3/4"

$14.95
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Nex red silver motor - &, lot

Nex red silver motor - &, lot

$14.99
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Nex education - education, –

Nex education - education, –

$29.95
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200 nex connectors - connectors, mix

200 nex connectors - connectors, mix

$17.95
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Nex balls yellow - balls, –

Nex balls yellow - balls, –

$15.93
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Nex bulk lot mixed - lb,

Nex bulk lot mixed - lb,

$39.99
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Nex silver spacers - k’nex,

Nex silver spacers - k’nex,

$12.95
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Nex rippin rocket purple - rippin',

Nex rippin rocket purple - rippin',

$13.95
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Nex thrill rides krakens - k'nex,

Nex thrill rides krakens - 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 - you,

You choose nex - you,

$3.25
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Nex 100 unique models - k’nex,

Nex 100 unique models - k’nex,

$39.95
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Nex 63147 hyperspace - 🚀,

Nex 63147 hyperspace - 🚀,

$50.00
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Bundle k nex - (449), of

Bundle k nex - (449), of

$20.00
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Knex mid gray rods - 75, 7.5

Knex mid gray rods - 75, 7.5

$13.99
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Nex gray way 3d - gray, 4‑way

Nex gray way 3d - gray, 4‑way

$39.95
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Nex roller coaster - k'nex, track

Nex roller coaster - k'nex, track

$14.97
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Nex bulk lot - k'nex, building

Nex bulk lot - k'nex, building

$30.00
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Nex flying saucer - 515, piece

Nex flying saucer - 515, piece

$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 - knex, lot

Knex parts pieces - knex, lot

$29.99
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100 micro knex - micro, purple

100 micro knex - micro, purple

$13.95
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300 knex dark green - knex,

300 knex dark green - knex,

$13.45
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Nex thrill rides vulture s - thrill,

Nex thrill rides vulture s - thrill,

$49.99
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Nex red 3 way - k’nex, 3‑way

Nex red 3 way - k’nex, 3‑way

$9.45
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Knex panels square - 25, triangle

Knex panels square - 25, triangle

$16.99
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Knex motor black battery - motor,

Knex motor black battery - motor,

$19.95
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Nex orange 8 track - orange,

Nex orange 8 track - orange,

$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 - ferris, building

New ferris wheel - ferris, building

$78.18
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📊96 listings · from $1 · avg $43.13

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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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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