I find bra shopping at anyplace that isn't a "lingerie store" very stressful. JCPenney, Sears, Kohl's, Target...all useless, to me. The bras are scattered everywhere, the sizing is all different, and the racks are too close together! Everything falls on the floor and hangs crooked, and it just freaks me out! Even if I do manage to find some in my size, I try them on and think, "What the heck?" my breasts either look like they're sitting on a shelf, or are pointing the wrong direction, or are cone-shaped. I don't know who designs cheap bras, but it's probably a man.
I only buy bras at GAP Body or Victoria's Secret, or maybe an outlet mall that has a Playtex or Bally (but there aren't any of those where I live). I'm a 34DDD-36DD depending upon the brand, and many stores don't even STOCK that size. The worst is trying to find a sports bra that doesn't leave my flying all over the place when I run or kickbox. It's painful to not have proper support!
So, yeah, I'm with you. It's awful. Also very expensive...my bras are usually the most expensive part of my outfit!