The Surface Book seems to be off to a good start.

Microsoft's first-ever laptop, which became available for preorders on Microsoft Store last week, is already out of stock.

See also: Inside the creation of the Microsoft Surface Book

Trying to order any of the five available options in the Store only let you leave an email for Microsoft to notify you when it becomes available.

Does this mean the Surface Book is selling better than expected? Probably, though we don't know how large Microsoft's preorder stock was.

Microsoft Store isn't the only place where you can preorder the Surface Book; we've checked Amazon, and cheaper variants are still available for preorder there. However, if you try to preorder an Intel i7 version, or one with 512GB of storage, Amazon will redirect you to Microsoft Store, which obviously won't help you much.

The Surface Book ranges from $1,499 to $2,699, making it one of the priciest laptops out there. The cheapest option of the 13.5-inch, Windows 10 device comes with 128GB of storage, an Intel i5 processor and 8GB of RAM, while the most expensive has 512GB of storage, an Intel i7 processor and 16GB of RAM.

If you're interested in buying a Surface Book, don't worry: these are just preorders. The device officially arrives to retail and online stores Oct. 26.