I usually pay between $60-120 for biking bottoms (shorts and capris). I've tried cheaper ones but they seemed flimsy to me or just don't look good on me.
For every biking bottom piece I have kept, I have tried on at least 3 that I have not kept. I spend a lot of dough sending things back. I don't have big stores near me to try things on in. When I find something great online that fits well, I'll buy a second one just to avoid all the hassles of looking again.
You have my sympathy, I know the choices are very limited in XXL size.