Why ? Is it bad to say it's a pay-per-sale commission ? Because I'm pretty sure they will ask more on that commission and hwat I mean by "based on performance".

No, what I meant was you don't have to get too complicated and explain the entire affiliate marketing business. All they see is $x per week coming in and are curious as to if they're owed their pound of flesh :winkwink:

You're a sales and marketing company that is paid a %age based on sales, that they will understand.