AWS is adding an upper limit to spot price bids of 4X the on-demand cost, as of December 20: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-spot-limi

AWS is adding an upper limit to spot price bids of 4X the on-demand cost, as of December 20: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-spot-limits.html http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-spo... This may be in response to some of the crazy bids we've seen on the spot market since people started using it for mining.