Most CL postings aren't worth looking at.
However I bought a 55 gal in perfect condition, not a single scratch for $35 bucks without a stand (didn't need one) thru craigslist, in Erie PA.
I also found a 200 gal marine setup with everything including stand, protein skimmers, canister filters, media, decorations, live rock, and multiple expensive marine fish all included for $1000 - The guy wouldn't sell to me because I would have to relocate the marine fish to my LFS (as it woulda been setup for freshwater).
So I ended up buyin a 150 gal Marineland aquarium / stand from Petsmart (came with light, undergravel filter, and very nice glass canopies) - also bought two 530 gph UV canister filters online - with everything: air pump / hoses, digital aquatop heater, (black) substrate, all brand spanking new - And I spent less than $1000
Shop around dude.