If the barrel is that bad, the sporterizing is a good idea...
as for expense, that all depends on what you want to do...
I took a mod. 95 mauser bolt and action, spent 600 bucks on it, did all the work myself, and had a SWEET 243 Win, in a Brownells fiberglass stock, and a bushnell scope... (I sold this one)
I then built another 243, Fajen plainsman stock... Leupold optics... roughly $1,000.00
I have a model 95, with the ORIGINAL barrel, cut down, and re-chambered for 284, and a "cock on open" kit in it... re-worked military "C" stock... not bad looking, but not perfect... Leupold optics, and about $400.00 bucks TOTAL...
I ALSO have a Mod. 98, a Check BRNO gun, in a TOP OF THE LINE Fajen sporter, made of burled walnut, with rosewood pgrip cap, forend cap,and butt plate... STILL haven't decided on a caliber...
If you are going to sporterize one, all I can say, is DON'T go "cheap"...
all mine have Douglass Premium barrels (except the 284) and Timminy trigger, Bueller safeties...