Apparently, now that the sets are out, DeepDiscount.com has decided to become competitive. The Blu-ray is $39.89 and the DVD is $32.89.
And interestingly, if you're into that sort of stuff, Target has exclusive editions of both sets with a 45 minute cast interview. - though both are a few dollars more than what Amazon.com and Deep Discount.com are charging. And, of course, Target charges sales tax in the states with sales tax...