I got REPRAP 3D printer mechanical kits for sale at the crazy price of $140 plus shipping
Build area is 130x130x130mm
Right now the cheapest mechanics
Parts kit on EBay is from China, made from threaded rod, has no stepper motors and costs $150.
Mine includes stepper motors which if you buy separately is about $40 in itself. Includes all hardware.
Use the contact form to PM me for the PayPal address if you want one