Said Sears:
Unfortunately ... one of the Marketplace third party sellers told us that they mistakenly posted incorrect pricing on two Apple iPad models on the Marketplace portion of the website.
If you purchased either of these products recently, your order has been cancelled and your account will be credited. We apologize for any inconvenience this may have caused.
The second model that was selling was the 32GB/Wi-Fi version, with a $179 price tag.
Angry consumers took to Twitter and Sear's own marketplace review page to vent frustrations but there is little they can do except accept that they aren't getting a $500 device for $69.