gym equipment on the cheap?

[phatkid77]

anyone have connections or what the lowest $$$ stores can sell for, or have used shit???

long story, but the short is im looking for

400 lbs olympic plates (mostly 45rs)
2 fully adjustable benches
60-100 or 120 DBs
maybe one of those costco total gym/smith machines ( can only one person use those things at once??

thanks

phats