ebay tard - Somebody who thinks they're smart because they bought stuff

Somebody who thinks they're smart because they bought stuff on eBay, but they’re just getting cheated.

I bought a laptop for $100. It didn’t work. That eBay tard is gonna regret it.

That 'brand new watch' was a fake. I’m gonna send that eBay tard a death threat.

I paid $300 for a broken phone. That eBay tard is getting a punch in the face.