It was just the other day when Microsoft launched the pre-order page for its Surface tablet running Windows RT. Priced at $499 for the 32GB and $599 for the 64GB (both without the Touch Cover), the folks in Redmond are providing an affordable option for those wanting to try out its definitive tablet. It seems that $499 price was a major hit, as it is now sold out at Microsoft's online store. The order page says it should ship within three weeks, while the other options are still expected to arrive on October 26. Those two options are the 32GB model with a Touch Cover for $599 or the 64GB model with Touch Cover for $699. It remains to be seen just how popular those bundles are, especially when customers can save $20 over a separate Touch Cover purchase for the bare Surface. To that end, Touch and Type Covers, the more traditional keyboard version, are still available for $120 and $130, respectively, and will also ship on October 26 for pre-orders.