got them at stoptech. talk to matt weiss, he's the subaru guy. very helpful and very hard to beat his customer service. they had a huge backorder a little less than a year ago and he kept me in the loop the whole time. don't think i can list prices or a link from their website, but lets just say the prices are very reasonable
they dropped even more than from when i bought them.
personally i'm running axxis ultimates, i think they're an excellent street pad, and they also work well in freezing temperatures. there's another thread floating around somewhere about how the axxis pads dropped in price, maybe in the vendor forum.