Retail shops have to deal with similar. Basically they used you as a rental service, but used ebay's policies to force it through. When I worked retail, we use

Retail shops have to deal with similar. Basically they used you as a rental service, but used ebay's policies to force it through. When I worked retail, we used to get people buying cameras or lenses and using them for a weekend, then returning them under the 7-day "no quibble" refund policy. It wasn't uncommon for a camera or lens to come back with 10,000 shots taken. Best we could do with them is clean them up and sell them on as refurbished. A few went back to the manufacturer and came back as "factory refurbished".