Ordered one too.
I'd rather give my business to Amazon for some of the reasons mentioned above, so I e-mailed their Customer Service people to see if they would PM, since they were in such a war with Walmart last year. Unfortunately, the response was, "we don't PM, but we do have the pre-order guarantee" yadda yadda.
Oh well, worth a shot! Guess Walmart just got my $15.