For those who must have Practical Variable Speed Drives and Power Electronics for the Amazon Kindle, you’ll have to shell out $41,916 on Amazon, which works out to a hefty $137 per page. No, the Kindle itself isn’t included.

At $137 a page, we’d recommend you read and re-read the sample for Practical Variable Speed Drives and Power Electronics a few times before pulling the trigger, Sparky.

[via Amazon]