Hi I am somewhat familiar with Clickbank and here is what those numbers mean!
The first one $/sale $17.09 is what you will get per sale.
The next number % sale 50% is the percentage of the total sale that you get so this product is probably priced around 37-39 dollars.
The % refd 26% tells you that that 26% of the sales of that product come from affiliate marketers referrals.
And the last one grav 2.99 is the number of distinct affiliates who earned a commission by referring a paying customer to the publisher's products. This is a weighted sum and not an actual total. For each affiliate paid in the last 8 weeks they add an amount between 0.1 and 1.0 to the total. The more recent the last referral, the higher the value added.
Hope that clears it up for you Just keep in mind the higher the gravity, the more sales that are converting for that topic, I like to choose products with a gravity of 100 or higher, but that is not a specific rule just personal.
Charles

Post edited by: chamel, at: 2007/03/04 03:59