Japanese military rifles vary very widely in price; the reason is that towards the end of the war, the end run production of these guns was very rough, and the quality very poor......essentially water pipes mounted on boards
These rifles aren't really worth all that much.....also, a lot of the rifles imported into this country had the chrysanthamum ground off, and that really lowered the value of the rifle.
Type 99 (or whatever the number is) that were captured early on and have all their proof marks are worth more, and the price is going up, as more and more collectors are wanting those pieces. If the rifle is of dubious quality and not worthy of 'collector' status, then I would say go ahead and have it converted. The problem is that most of the low end guns are going for $125-150, and I'm sure that a conversion would cost a LOT more than that.......
Thought I saw Prvi Partizan having them as well somewhere, Grafs(?).
Yes, Graf's carries the Privipartisan line.