Loaded 5's are worth between 8-9BTC. Blanks don't give a good indication of what they're worth.
I doubt that this is the current market price, its been a while since a five could catch that kind of premium.
Casascius has been very low the last couple of months.
Fair enough, the market has been slow. But even on a very slow market, I'd say it's pretty unlikely that the value would get close to the face value+blank price.