This may well be a silly question, and I hope it's in the right place here. Here goes...
I am thinking of putting up a WSO having not done one for a loooong time.
I notice I keep getting emails promoting other people's WSOs and wonder about the affiliate side of them.
Do you need WSO + or WSP Pro to allow your offer to have affiliates?
And is there a one time payment to allow you to use it for all future WSOs?