I just did this, and got:

Amazon Bestsellers Rank: #100,990 in Books (See Top 100 in Books)
#2 in Books > Science Fiction & Fantasy > Authors, A-Z > ( L ) > Lee, Sharon
#92 in Books > Comics & Graphic Novels > Manga > Science Fiction

My search was 'carousel tides' - Sharon's book was the #1 match, Sharon's Amazon author page was the #2 match. I would dearly love to know why Cryoburn by Lois McMaster Bujold was the #3 match!