Good ones are rare, and will go a grand or more, but I think they are worth the price.
If you get a good barrel, and match the ammo to the sights, you'll have an extremely accurate rifle.
Problem is, non bubba Krags are getting hard to fine. Carefull with the carbines, many have been made from rifles by bubba's and arn't worth the scrap metal price.
If I was to buy one (or another one, I have a great specifiman) I'd expect to pay between $1000 & 1500, but Ive seen them higher. Cabales in Rapid City had a fairly nice one for $1995 in their gun library.
Before you buy, check the serial number to determine the date, then check the sights to see if they match.
CPT USAR Ret
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071