Is this UNO counterfeit? (last one of these, I promise)

Clones are in a whole separate class from counterfeits that infringe the trademark. Clones that don't pretend to have been made under the Arduino trademark serve a useful function in the marketplace, and if you don't come here for forum help, using them is legit. It's a matter of personal choice whether paying extra to get the original article is worthwhile. Infringing the trademark is stealing.

Shpaget, if I can ask, where are you shipping to that it costs $100? That sounds horrible!