Actually, it's nothing like that. First, no depression right now and the higher price is not ten-fold what it was before.
This is selling stock of something that is fairly close to the going market rate for the described item.
How I see it, there are a lot of different SKS grades out there, and these particular ones are considered some of the best around. They are in limited availability, so the price is based on the supply and demand. Since there was no supply to accurately determine the going price, the safe option is to start on the higher end. If it doesn't sell, you can always go lower. If you started lower, you would not likely get a chance to raise the price before you are sold out.
I'm definitely not an Economics major, but I totally understand where Marstar is at with their pricing.
Look for these to be gone in a week or so, if not the price may drop by the new year. Or not; it sounds like these have been sitting around a bit. Not a big deal to sit on them another few months at the current price.