He's not the only example of this practice. Even 'reputable' companies do it. For example, you can buy brand new, Epson compatible carts for a penny or two
Right Here.
And Here. Check the postage.
Another much more common practice is adding PayPal fees to the auction price, typically 4%. This is also in contravention of eBay rules, so do eBay really care that much?
Cheers,
JaX