I was at a military/gun show today looking for a type 90 Japanesearmy helmet, they are now as high as most German
helmet's, several years ago they went for about $50-$70, today i looked at two, both were over $600 and did not look all that good. i did manage to get one for $180 that some guy was walking around with, and i felt luckey to get it for that.
i am seeing more Japanese stuff at shows then i have in the past, and your right the price is climbing.