[Us]Potential buyer wants Macfax report (www.macfax.com) for a MacBook I’m selling on eBay

A seller on eBay is being asked by a potential buyer to provide a Macfax report for a MacBook. The seller is suspicious after conflicting Google results indicate Macfax may be a scam, with one response warning it's a variation of a vehicle history report scam adapted for tech items.