K’NEX 500 Pieces Roller Coaster Building Set $20.65
Amazon has the K’NEX 500 Pieces Roller Coaster Building Set marked down from $39.99 to only $20.65 and it ships for FREE with your Prime Membership or any $49 order. This K’NEX Education set includes over 500 parts, plus a battery-powered motor, for a single child or a team of two to three children building a working roller coaster. Two additional models are also included in this set — a ramp and a half-pipe — which can be built one at a time.
Amazon prices change frequently, so this deal may expire at any time.