CompUSA has bested the deal for this at Amazon.  Currently on sale this week for only $49.99 (listed at $69.99).  This is 28% off!  Plus, select the local pick up option and save on shipping!

This value pack includes a full-year subscription plus headset, the Xarcade Game - Billiards, a $20 game rebate (for a limited time only), and 200 marketplace points.

So with the $20 mail in rebate (EDIT:  good towards a game purchase), this kit totals around $30, thus making this is a rediculously stupid deal/decision...

Click here for this deal:  Xbox 360 Live 12 Month Gold Card Kit

[Thanks Lord Slappy!]