Bribes have never been necessary entering Argentina. What's more, most of the world doesn't pay the fees no matter where, when or how they enter--it's a reciprocal fee, based on what Argentina nationals pay for USA, Canada or Australia visas.
No big deal, but we might as well get used to these sorts of visa fees. As a US citizen, I paid handsomely for four visas in Latin America, and Argentina is now the fifth--add Chile as the sixth if you fly in. I go to West Africa regularly, where there are quite a few countries charging equivalent amounts, and one which last I checked was charging substantially more. Lots more restrictions on where you can obtain visas, too. More corruption, more expensive in general. More objective danger (e.g., wars and civil insurrection). South America's not difficult and not expensive by comparison.