Looking to save on those mail in rebates from the T-Mobile mothership? Check out “The Shack” offering up the Samsung Sidekick 4G and T-Mobile G2X for $99.99 and $199.99 respectively for new customers. Looking to upgrade? The Sidekick 4G will set you back $149.99 and the G2X will cost you $249.99. If rebates aren’t your thing then consider The Shack offer!