bb1, that would be ideal.
CCbill is big for it´s basket and processing solutions. They cover the whole value chain. Sourcing, ordering etc. but charge quite hefty fees. Part of the software is an affiliate component. It´s mainly targeted at folks who provide original content (porn) or sell physical products, i.e. it facilitates dealing with end users.
In our industry you just need the affiliate side of things and most programs have established their “in house” tracking already and will be reluctant to switch.