Check Amazon for shorts and bibs from Przewalski and Spotti. Both are really good for the money. I got three or four sets so I don't have to wash clothes after every ride. The DuPont CoolMax pads are terrific, and the shorts and bibs overall are good quality. No problems with stitching, etc., including on the first pair I got two years ago and have worn dozens of times.
Black Bibs brand are good too, and cost only a little more, but still much more affordable than many brands. The pad isn't quite as comfortable to me as the DuPont CoolMax, but I prefer a slightly thicker, firmer pad after losing weight (not much padding on my sit bones anymore). Some folks dislike those diaper style pads, so what's comfortable for me might not be for someone else.