Stainless Redhawk, used in nice condition you can get in my area for about $500. Exc. I would say $600. As for blue one, depends but I would expect about $50 (max $100) less than stainless one. Now, if really want blue one, I would say go for it, otherwise, I would suggest go for stainless. In case you have any scratch just a touch with Scotch-Brite will fix it. Try to fix scratch on blue gun…
As for reloading, it’s easier than for rifle, although one more die, but no case lubrication with carbide sizing die.
WARNIN

if you are assembling target/practicing load using one of those fast powders, always use two loading blocks, especially when charging powder. Take empty case from first block, charge powder and place case with powder in another block. After you finish with one block, take it under strong light and check couple times ALL cases, to make sure that powder level is the same in all of them.
BTW, when using fast powder first time, take one case and load it twice with powder, just to see what would be powder level if you make mistake and double charge. Of course, make damn sure that all powder from that case goes back to powder measure. Otherwise, KABOOM is inevitable.
For that particular reason I use for target loads IMR SR4756. If double charged, 41 and 44 cases are filled right to the top, no mistake that something isn’t right.
Another advice; get good aftermarket grips. Original wooden one are not so “hand friendly” INMHO. Even 50-100 rounds (medium loads) might quite “upset” skin in web area next to thumb. Redhawk is
very sturdy revolver, but my and your hands are not; been there, done that...