Gear seems to go pretty quick on my local craigslist but there is one guy who made a pseudo-business in his retirement of low balling other people's listings then making franken-kits out of other people's mismatched junk and reselling them at a premium. Using your example above: he would sell a 4 piece Tama rockstar kit, each with a totally different used banged up head, one drum missing it's wrap, most drums missing the bottom hoops, with a rusted first act hi hat stand, and a set of those brass discs pearl likes to slap their name on and call 'cymbals' to be sold with budget kits, for $400. He sells beat up used remo heads that I wouldn't even give another drummer for free as 'vintage' for $15 for tom and snare heads and $30 for bass drum heads. He currently has a 60s MIJ pearl stencil student level snare drum in pretty rough shape listed for $200 lol.
I once reached out to him as I had a stack of over 20 different Evans drum heads, all in their boxes, all with less then 1 hour of play and no noticable wear, including tom, snare, and bass drum heads, and said he can have them all for $30... He immediately responded and said "not interested, I can't make any money at that price. I'll give you $10 and you have to drive [90 minute round trip mind you lol] to meet me." I never said anything back.
There is one repeat listing I've noticed: for over five years now a guy keeps posting the same listing every few days looking for a supposedly stolen mesa boogie guitar cab and head. Same picture, same story "last weekend I played a gig and it was stolen, blah blah blah", every time. So either 1. This guy refuses to accept the fact that his amp is never coming back OR 2. He is full of crap lol.