Author Stephen Leather sold 44,334 Kindle books this past December.

Leather explains more in his blog: “In December it was my vampire book Once Bitten that sold best, accounting for 22,607 sales. Interestingly it is my New York serial killer story, The Basement, that is currently selling best – and heading the Kindle UK bestseller list. But in December it was lagging behind Once Bitten with 17,321 sales. For most of December Once Bitten and The Basement were Number 1 and Number 2 in the Kindle UK bestseller list respectively. As of today, it’s The Basement that’s Number 1.”

Based on the numbers that Leather shared, KindleWriters.com figured Leather’s royalties for the month of December to be about £12,700 or $20,000.

Via TeleRead.