If you're looking for the military Gore-tex type boots, I think Sportsmans guide had a sale on the "2nd" Gore-Tex bates US issue for $70. Item # dx8m-100529x. I've got some 2nd's from them from a few years back; the issue was that the eyelets didn't line up perfectly; otherwise function well.

I've used the cheap Jungle boot knock-offs for years to hike the mountains in Cali. They worked great, but don't last long (lots of granite in them thar hills). If you go that route, yeah, it's $30, but they wear out after 1-3 years.

On the civvie side, I've got a pair of Chippewas and a pair of Wolverines that are at 11, and 12, years respectively. Not worn every day during that time, but each of them has literally years of use in them.