I posted an ad to sell a few things and was immediately contacted by someone calling themselves Rose Lama, willing to buy the item without looking at it and paying full price, but only via PayPal, and asking about details for my paypal account, when in reality it would be me who sent them an invoice to their email address.
Turns out its a Nigerian scam, so adding this blog post to add to Google's searchin indexing and so warning others in the long run who will find this article.
The emails came from the email address rose.lama401@gmail.com
Plenty more information about this scam in this article: https://www.paypal-community.com/t5/Access-and-security/scam-buyer-through-Gumtree-involving-a-payment-to-Nigeria/td-p/508334/page/3?profile.language=en-gb