WHY do people keep repeating that?! Qt is NOT under GPL, you do NOT need to release your software under GPL to use it!
If you don't want to abide by the LGPL requirements you will have to fork out 459 USD a month. For an established development company this is not a big deal, but for a side project?
LGPL is mostly a problem on iOS, since as far as I know it collides with App Store licensing rules, but not that big a deal on desktop platforms.