Bolt m/m, assuming everything else was period original to the "nazi" era upgrade and or rework, maybe $400-500 if you're lucky. Bolt matching could double it, maybe, the metal and stock finish would matter a great deal if you want to get top dollar. A better maker/date can help too, MO/16 or 17 isn't a heart flutter to most collectors... a rifle with more Imperial characteristics helps too, some of these can be pretty original if done early enough (have factory parts, only an RS upgrade)
Biggest problem with these (upgraded G98's) is a far fewer collect them; Imperials have far more demand and of course 98k at least doubles that demand. What drives prices is demand, not many collect interwar, and most interwar dudes (with a willingness to pay high prices) are police specialists, the G98 was never issued in numbers to the police, perhaps early on right after the war, but although these are far more elusive in upper grades (small supply), the limited demand means that supply is not in any great danger of exhaustion... therefore low prices except for exceptional examples (which are very elusive)
Mismatchers are not hard to find, more than enough to swamp demand... the only high demand interwar is P08 and 98b's, the 98b often outperforms 98k prices.