I dont know how many different plans and videos i looked at,
I wanted the jacks and screws for adjustment.took two days to build and 600 in materials including the air jacks.
I put casters and jacks on mine. Most of the steel and the jacks were free to me. Got about 200 bucks in casters and grade 8 hardware. I could see 600 - 800 if all had to be bought.