I have a pair of Cabela's Legacy 24 oz 100% wool pants that are machine washable and seem to be pretty well constructed. I also have a pair of Canadian-made Bill Bill's Codets that are 75% wool pants that are also well constructed. Both pants are very warm and their seams and buttons are holding up well. The Codet's appear to have a tighter weave and I wear them more often as they are a bit lighter. I will be honest, I cannot wear either these pants comfortably unless temps remain below freezing, especially when I'm active. I have warn the Codet's in a couple of minor snow storms while elk hunting in CO, and they shed the moisture nicely. Both pants are worn with merino wool base layers and a good pair of suspenders.
I don't recall the exact price I paid for the pants but both were purchased for well under $100 each. I think either pair of pants would serve you well.
