All very true guys, but ... most of that can be built from scrap for next to nothing. It doesn't have to be salable quality, but I could build that from stuff around the house for probably 10-bucks in CO2 and power, plus the cost of the bottle jack. Even then I have a bottle jack that came with the truck which I have replaced with a small floor jack, so even that is essentially free.
I would build it from well casing pipes that came out of my old well. 400+ feet of 3" schedule 40.
Having said that, I did buy my 25-ton shop press, but that's just because I was lazy.