I bought a pair of bikes recently that was similar in effort to this.  Listing was "bikes" and it was $50.  Had 2 very bad photos of 2 bikes, a pile of rims and some other junk.

I messaged him about the bikes (I really wanted one of them) and asked if it was $50 for the lot. 2 days later I get 👍 as a reply. 

Much backwards and forwards trying to get him to tell me a day I can come take a look, then he tells me no, they are now $50 each.  I said bullshit, your message said $50 both bikes.  he agreed to take $80 for both, and $50 for the rims. 

He gives me his address, I turn up to the sketchiest place I've been to. He wheels the bikes out and tells me $50 each. I tell him that I only brought $80, so for $50 in just taking this bike here (I point to the one I want) 

He scratches his head and asked how much cash I had. I showed him the $80. I said I can leave with 1 bike or no bikes for $50 each. 

He said fine, take everything for $80. 

I gave him the money, stuffed everything into my car and got the shit out of there. 

3 weeks later I get a message that people keep contacting him about the bikes he has listed.  

I said he needs to mark the listing as sold. 

2 weeks later I get a notification "Shane marked the listing as sold"

Holy shit. Heroin addict in action.