Probably. I had a mate ring me in high excitement about some McIntosh high end stuff for about 2/3 its value, apparently on Gumtree near me, would I mind collecting? I sent an email offering to collect, got the usual crap about "I'm away for work in Devon/the Outer Hebrides/Mongolia,and it's boxed up in the car, but if you transfer the money by bank transfer I'll post it, blah blah."
I strung him along for a bit then asked if he'd accept Western Union transfer. He asked "Are you having a laugh?"
"Yes I am but you started it. We both know you don't own this item, however in the unlikely event that you do I'll meet with cash."
No reply. I raised a complaint with Gumtree and they pulled the ad.
So if it seems like a scam it probably is, see if he will accept cash on collection, if not then you know.