A best bet is the Hot Wheels Custom Motors Power Set Pickup Truck for $8.99. Coupon code "JOLLY20" drops it to $7.19. With free shipping, that's the lowest total price we could find by $10. Sales tax is added where applicable. Features include more than 20 interchangeable parts, three sets of tires, easy-snap assembly, and more.
Orders placed by December 20 via ground shipping are guaranteed to arrive by Christmas. (Choose 2nd-day by December 21 or overnight by December 22.)