For $2500, I can get a S&W 500Mag for about $900 + $450 (100 rds of ammo) + $900 another 500 and $225 rounds of ammo (50 rds) as back up. This would total around $2475. I would hunt around for some more money to get a couple of holsters.
That would satisfy my 50 caliber handgun itch for something reliable, powerful, and novel..........
I will stay with a 45ACP 1911 for sentimental reasons.