Beyond that, you're looking at some sort of pullover pants. Gore-Tex, for instance, is marketing some pants made of Windstopper (similar to Activent) under the Concurve brand for $99, and probably worth a look. Otherwise, the only good choices are expensive ones, such as Cloudveil's Symmetry Pant, which uses a Schoeller fabric that is highly water-resistant, nearly wind-proof, and dries very fast. Alas, they're $225.
From there, you get into full Gore-Tex pants. Best bet here is to buy a pair from the biking-gear makers, such as Performance. You can get a very nice Gore-Tex pant from them, the Elite Cycling Pant, for $149. It's even on sale now for $99.