With availability of these becoming less, that's a fair price. It is indeed what's known as an Acusport Bisley. Acusport is a distributor and they contracted Ruger to make these uncataloged models exclusively for them. They're also available in .44 mag, .411 mag, 45 Colt and .357 mag. This one, having the laminte grips, is from the second run of this particualr model. The first run had the regaulr wooden grips. I believe this one you've found also will have the bbl warning on the underside rather than on the side.