Well, if you haven't tried on the monobib style, you'll just have to do that. It happens to be a very good idea, very practical & comfortable. I love bibs but won't wear the traditional style anymore with the dual shoulder straps. The front straps hit me in all the wrong places. No, you don't pull the monobib over your head. You step through it, or into it, like a bathing suit, then you slide your arm through each strap & pull it up over your shoulder. Done! It is very easy, & the strap doesn't rub or move around. The newer ones have a buckle that removes for bathroom ease. You pull those on the same way, then pull the single strap over your head & fasten the buckle. No problem, and goodbye to elastic waistband.

The reason women's bibs tend to be expensive is because they tend to be the manufacturer's top-of-the-line model in fabric, cut & chamois. This is because the market for women's bibs is fairly small, so the manufacturer is not going to take the risk of developing an extensive selection in bibs that might not sell.