I am just a consumer, (check out my handle on this site Windknot, been on it for a few years +) but http://www.redtruckflyfishing.com
constantly has excellent fly fishing gear and clothing on sale. They are like a very good version of Sierra Traders. I think they worked out a deal with Simms to sell their over stocked items or something. They had a 4 day sale a few weeks ago on Simms gear that was off the hook! They got cleaned out pretty fast too. I bought 2 Simms high performance fishing shirts for $24. a pop...normally around $70 a pop....I was so pleased with the shirts I went back on line 5 days later when my shirts arrived to buy more gear...and the Simms stuff was pretty much all gone. Check them out. (this on line store is the on line store for Leland Fly Fishing of SanFrancisco.