Clickbank statistics

$Earned/Sale: Average net amount earned per affiliate per referred sale. Note that this is the net earned per actual sale, and so it is impacted by refunds, chargebacks, and sales taxes. Unfunded sales, such as returned checks, do not impact this number.

Future $: Average total rebill revenue earned by the affiliate due to sales from a site. Generally this equates to the average sum of all rebills.

Total $: The sum of all initial sales and rebills divided by the number of initial sales. It is the average total $ per sale, including all rebills that may come from that sale.

%Earned/Sale: Average percentage commission earned per affiliate per referred sale. This number should only vary if the vendor has changed their payout percentage over time.

%Referred: Fraction of vendor's total sales that are referred by affiliates.

Gravity: Number of distinct affiliates who earned a commission by referring a paying customer to the vendor's products. This is a weighted sum and not an actual total. For each affiliate paid in the last 8 weeks we add an amount between 0.1 and 1.0 to the total. The more recent the last referral, the higher the value added.

Hope this helps!