$575 is too high, even with the Leupold scope. $450-475 would be the highest I would go for the gun. I guess it really depends on how bad you want the gun, though. The 2-7 Leupold is a pretty good scope, and I have one on my Ruger No. 1-A 7x57. But you can get them for around $185 new, so used you can expect around $135-145.
I do like the BLR rifles. I have an original Belgium made BLR in .308, and I used it to take a couple deer last fall.