Amazon with OrangeOnions has the Kre-O Transformers Ultimate Set: Optimus Prime & Trailer with Twin Cycles (30689) for $26 with free shipping. Contains 542 pieces and can be built as a robot figure, semi truck or battle station. Includes 5 Kreon minifigures. Kre-O is distributed through Hasbro and is notably similar to LEGO.
$26 retail: $70Report