Gumtree Scam?

[Wojc345]

I am trying to buy this power supply and the guy says he is including the motherboard as it is slightly broken. I asked him if he would take PayPal payment and then he went on to say he doesn't have a PayPal and when I asked him for bank transfer he agreed. He said that he would post it right after I would send him the money at 4pm as thats when he supposedly finishes work. I asked him again for PayPal and he said that he's been done over PayPal. Is this a scam or not? 

Link to advert: https://www.gumtree.com/p/desktop-workstation-pcs/corsair-cx750-free-motherboard.-/1300465909

Screenshots of conversation:

http://prntscr.com/jo10ix

http://prntscr.com/jo1119

http://prntscr.com/jo1177

http://prntscr.com/jo11ef

[Anonymous_User]

Personally I would move on but, you have to decide.  Why put yourself in an uncomfortable situation.   (If the guy is the seller, he should be sending you an invoice - there are other services he could use if PayPal is not preferred.)