Never would we have guessed that third-party wireless retailers would be aiming to launch AT&T's powerhouse Atrix 4G for just $150 on contract -- $200 or $250, sure, but not $150. Alas, just a few hours after AmazonWireless' peep show, we're seeing an alleged leaked screen shot of Costco's inventory system showing the same blockbuster price. Now, bear in mind that AT&T itself will probably sell the phone for at least $50 more -- third parties usually have a second ETF on top of the carrier's that allows them to subsidize a little more heavily -- but it's a
