Microsoft has unveiled its most expensive Surface Book model. The new 1 TB Surface Book costs $3,199, which is $500 more than a similar unit with 512 GB of storage. Included with this new edition is an Intel Core i7 processor and 16 GB of RAM.

The Surface Book is a tablet-laptop hybrid that runs Windows 10. With lower specs, the device is a bit more affordable, beginning at $1,499 with a Core i5 processor, 8 GB of RAM, and 512 GB of storage.

Since its launch, the Surface Book has been doing well. After initially selling out of its preorder stock, Microsoft has pushed ship dates to 2-3 weeks for some models and up to 8 weeks for others. The 1 TB Surface Book isn't going to ship until January 22, 2016.

This model will launch on October 26, at which point you can order it.