Did many alphas and Betas when they didn't charge but gave you the game free to test it. yep they used to "pay" you in the form of a free game for testing it. Bugs, eh I have tested maybe 100+ games and 95% where not frustrating. But you do learn to save when testing, and i had screen cap software running most of the time to record. real life is frustrating, a game, even when it crashes, etc is just a restart away. And as some said finding glitch's is kind of fun, you don't play the game to win, you play to do things out of the norm, you get to use those options nobody does. Can i get to that spot? You get to try weapons, items in weird spots , that table fork is actually killing stuff better then a sword, why? hey i can put on 7 pieces of Armour in one spot and it stacks AC! there are fun bugs too (you would be surprised).
No playing alphas is easy, PAYING to play them is hard, I have paid for to many Greenlight games that promise or mention features that never show up. I wont even mention kickstarter.