u/IndependentEven6523

So basically I'm trying to sell my PC and I saw an ad on Facebook Marketplace of a company paying for PC (parts or whole). His Facebook store page is PC Lab Québec. He has no physical store or address and he told me his site is under construction. He is buying cash though which makes it harder to scam and he did say some specific things on PC building that proves he as at least basic knowledge of PC Building.

I'm having doubts but there is nothing in his messages that confirms anything, do you guys think it's a scam or not?