Amazon EC2 spot prices

I was about to do some testing with a cheap Elastic Compute Cloud Linux-instance, but ... AWS wouldn't allocate me one.

Here is the reason from Amazon EC2 Spot Instances Pricing:

Somebody really lost his marbles and is paying ludicrous price for a box.

Ok, in reality that has to be work of two (or more) automated systems competing with each other in a situation where capacity of i2.4xlarge instances is scarce. Any human would do what I did, just pick the bigger box and be happy about that. That instance type with normal pricing costs like $3.41 / hour, and with spot pricing it goes ~60 cents / hour, but not when automated bidding goes haywire.