50-3000 USD depending on EXACTLY what it is you have. RG 16 CAL 22 Magnum
50-250 USD
50-150
50-175
No more than 50
50-500
50-150 or so
50-350 USD or so
Which .50 cal, and do you mean .357 Magnum? If you're comparing the .50 AE to the .357 Magnum, the .50 AE is more powerful, by far.
25-50 USD
50 dollars tops.
About $50-$60.