Did you notice I capitalized the word NEW? Heck, I bought 10 sections of 12'x4' pallet racking with 3 sets of beams and six wire shelves PER section for $10 EACH section. Far less than what normally just 1 beam or 1 shelf would cost on CL. I'm sure there is someone out there whose gotten a hydraulic winch for FREE. But it's not the going rate.
Sorry, but you hit one of my sore points, all the people on this board advising solutions (hydraulic winch) WAY more expensive than the OP's perceived needs, then other posters pile in about the CL deal somebody made that is rare.