I'm looking at buying a Super Blackhawk in 44 Mag and I have a guy wanting to sell me one for $515. It's used, blued with a 7.5 inch barrel and fluted cylinder. Also comes with a leather holster. No paperwork or box, I believe it's a newer model. I've only seen pictures but it looks like it's in real good condition. My question is, based off the information above, does that seem like a fair price? Really good or really bad price? I've done some research but still unsure. Thanks for any help