I scheduled a promotion for today through Kindle Book Review. Cost, $40. Result, not one sale. The same book, promoted through EReader News Today, resulted in 65 sales in a similar time frame when I promoted it about 3 months ago.
I read other reports from people who’d used KBR who said the same. No results at all. One used the term ‘fraud’.
I’ll just say that I found this promoter a waste of money. I recommend you NOT use KBR for your promotion dollars.