I think I paid $58 for my last new FSA standard 53/39 GXP crank set. It has been fine for the last 2800 miles, no issues and no complaints. The left crank arm has never once loosened up on me as others have complained about. I do believe that the quality of the BB that came with it is not so hot and I have worn them out fairly quickly in the past. That and they never seem to spin quite as smoothly/freely as my other bikes bb86 but I don't really care.
I have a new and hopefully nicer SRAM BB waiting to go in whenever this one wears out or starts to vibrate.