I'm in the market as well and I'm having a tough time deciding. I have bumped up my budget after a bunch of research. I now know that I don't want to buy a mediocre pair of nylon/poly pants that will melt into my skin on a sliding crash.
I was originally looking for a cheap pair of overpants, but now have escalated to wanting the best.
The link above for motoport is for there ultra 2 stretch pants and you stated that was out of your budget. But look at what your getting. 1000 denier material, Kevlar infused, that will take the abrasion on sliding down a road.
They also have a different pair that may fit your budget and offer great protection.
http://www.motoport.com/product/ultra-ii-cordura-pant/