I got the idea to document my promo line-up from Kboards Writers' Cafe. I don't quite feel confident enough to post it there, so my blog is the next best thing. I will reduce the price for the first book to 99¢ on Amazon and all other retailers a couple days in advance to make sure the price change is properly reflected when the promotions start.
April 14th (Thur)- Betty Book Freak ($12 USD) EST. Sales: 10
April 15th- BookRaid (Free) EST. Sales: 2-4
April 18th- (Mon)- FKB&T ($30 USD) EST. Sales: 30-35
April 19th- BKnights ($15.75 USD) EST. Sales: Not many as they gave me a full refund
April 20th- Book Barbarian ($15 USD) EST. Sales: 25-27
Total Cost: $72.75 USD (significantly more in CAD...)
April 21st - Change price back to $2.99
The estimated sales are only for TWBP: Book 1. Book 2 sales peaked on the 14th then steadily fell throughout the whole promotion.
FKB&T had the best results, but I was expecting Book Barbarian to be higher due to all the love for it on Kboards :/ BKnights was a bust BUT they gave me a full refund without me even having to ask for one. I guess they work better for free books, not 99¢.
My Amazon ranking didn't do any dramatic jumps so it's not really worth reporting. Also the other miscellaneous eBook retailers maybe sold a combined 4 books during the promo.
Overall, not the most successful promo run. But now I know which ones to use next time!