With the upgrade of the Xbox 360 hard drive comes an upgrade to the retail marketplace card as well. Not content having a 1600-point-per-card cap, Microsoft has created a card worth 4000 points now available online at Circuit City
The card will retail for $49.99 -- since 4000 MS points converts to US $50, that's like savings of a whole penny! (And additional fees of sales tax and / or shipping, where applicable.) We're still of the opinion that the most convenient and cost-effective conversion of dollars-to-MS points is a funds purchase via Xbox Live Marketplace itself, we understand the need for these cards as gifts or for youngsters given a (in this case, rather steep) allowance to satiate their online needs.
[Via Xbox 360 Fanboy