I was at my local Gander Mountain store yesterday, and noticed that their house brand of base layers were on sale. From what I could tell, they have two lines of base layers- one modeled after UA with shiny compression polyester, and one made of Polartec Power Dry not unlike Capilene 4 and R1. I got a pair of heavyweight grid tights similar a pair of R1 bottoms for $20, and a 1/4 zip top for $35. Fit is similar to Patagonia R1, at least for my body and size XL.
They appear to be all sold out on line, where they'd been selling them for 50-60% off. My local store still had a lot left, plenty of sizes between S and XL in men's, some tall sizes too.
Glad I ran across it- I've been waiting for someone to sell some R1 in XL on the Gear Swap and coming close to buying a set of similar Power Dry base layers from LL Bean. Not as nice looking as Patagonia's or LL Beans, and only came in black but not a bad deal.