Transactions that we do not cover including but not limited to payments for intangible items, services, real estate, businesses, vehicles (including, without limitation, motor vehicles, motorcycles, caravans, aircraft and boats), custom made items, airline flight tickets, eBay classified advertisements, licenses and other access to digital content. In addition, items prohibited in the PayPal Acceptable Use Policy are ineligible for coverage.
Here's a link to the PP UA:
https://cms.paypal.com/uk/cgi-bin/marketingweb?cmd=_render-content&content_ID=ua/BuyerProtection_full&locale.x=en_GB
