I think this is remarkable too. It's just a supply/demand kind of thing I guess.
I'm too young to have been involved in that kind of stuff, but I've read articles/seen pictures of place like hardware stores, dry goods stores, etc., having crates and barrels full of surplus rifles with signs hanging on them saying "Your pick - $15 each" or similar.
I kick myself for my ignorance even 10-15 years ago when I would go in some of our local sporting goods stores and they had racks of surplus rifles that were all $100 or less, some in the $40 and $50 range - Turkish and Yugo mausers, carcanos, etc. I vividly remember when a store in town was selling SKS rifles for $69 apiece or 3 for $200. And I remember thinking to myself "Gosh, who would want to buy junk like that....."
Ah, youth. It's wasted on the young.
Good luck and take care.