I sent a seller an email to at email address firstname.lastname@example.org , that was printed in the advert content, (not allowed in eBay policy) received a great buy it now price followed by fraudulent ebay invoice sent directly to my hotmail account, however the catch was payment only accepted via western union. eBay verified as a fraudulent ebayer.
I have since seen MAC PCS for sale on eBay using the above email address or variations of it in the message text.
BEWARE THIS IS A SCAM.
Ensure the sellers location and the item location are both in the same country