K.T., I echo everything you said, from loving the chart to learning about the top three, and finally feeling FreeBooksy is spendy. Cheers!

One of the ways I evaluate NL promos sites is by cost per download. I divide the number of downloads I get in a day by cost of the ad. Cost per download can range from 3 cents per DL to 25 cents and up. I won’t pay more than 15 cents, and my goal is to use sites that are 10 cents or cheaper (FYI BookBub is about 3 cents). So, while some sites don’t deliver the most number of DLs, they are often more cost effective than some of the more expensive sites.

However, to find out the CPD, you have to test it, and that means scheduling only ONE NL ad per day. If you promo stack, you won’t know which NLs were effective. But once you know, you can promo stack on your next promotion.