Torquefreaks and KrazyKoncepts both sell race fuel, cheaper than going to baxters. Torgue freaks on airport way just east of 205. Easy drive from there out Marine drive to PIR
Gratteri's 4x4 center in Hillsboro (next to Hillsboro Les Schwab, real close to you) used to sell VP at a pretty reasonable price, but I haven't been there in about 5-6 years so not sure if they still do.