the market makes the price.
I regularly see hugely overpriced little plastic parts that probably cost about €0.05 to make, yet they sell for €7.95. Why? Because 3d printing is not yet prevalent and the part is only made by one supplier. The customer is voluntarily paying the price, so the part must be worth €7.95 for him. The market makes the price.
These dudes managed to manufacture and sell to the public the first (?) asic mining device. They are cashing in on that feat and taking what the market is obviously more than happy to pay.
Nothing wrong with that. If you don't like the price, don't buy.