My wife has advertised a sofa and chair on Gumtree today. She had a reply very quickly via email but it seems too good be true - here it is

Great! please consider it sold and please cancel every other appointment regarding it as i am willing to pay your full asking price because i need to buy it for my cousin as a gift, i have read through the advert and I'm totally satisfied with it,sadly i would not be able to come personally to collect due to my hearing loss and me being in wheelchair.
I have a courier agent that would help me to pick it up at your preferred location after you have received your money and i'll pay you via PayPal.
Where is the pick up location so that i can inform the courier agent about it now?

The item is not hugely valuable at under £200, but is there a way someone can scam your paypal account, or am I being too cautious? I've only used paypal to buy things never to receive anything?