DB picked up my book about a month ago. The first time I found it on the DB bestseller list 2 weeks ago, it was #137. Last weekend it was at #89 and today it was at #39. Maybe it's just a coincidence. I'm not sure how else to track sales. Which brings me to a question: On the DB Bestseller list, do you know how many books have to sell for a book to move up 1 place, 10 places, 100 places?
Deseret Book recently made some changes to their website, making it a little more difficult to determine what place your book is in on the list. You have to hand count it. But the ranking of your book on the list still works in the same way.
The DB list tracks sales in relationship to the other books. If Book A sells two copies, and Book B only sells one copy, then Book A is first on the list and Book B is second on the list.
Go to the site and select the category your book is listed in. (Some books are listed in multiple categories.) There's a light blue bar across the top of the list of books and on the right hand side you can tell it how to sort the books. Default is by Popularity. That's what you want. Then count down to your book to determine what spot on the list it's in.
There's no way to find out exactly how many copies of your book have sold, only how it sold in relation to other books in the same category. There's also no way to find out how many more copies those books above you on the list are selling. The difference between first place and second place could be one copy or 100 copies.