Where's the logic in the price of these?

At current difficulty (19M) they would mine 0.26BTC per month (thats 10 months ROI assuming no difficulty increase, before you see a profit).

In the next 3 months you will see difficulty at ~ 60M meaning these will only mine 0.08BTC per month. (fast heading towards 2 years ROI).

In fact they may never pay for themselves.

If you've got $200 to spend just buy bitcoins.
If you've got 2.2 BTC might as well just keep hold of them.

IMO these are not worth more than 0.5BTC each.