Charging end users
I have a program I am working on that will tie into a certain inventory system to list up their data.
I couldn't find the exact wording on charging end users for the usage of tying into ebay.
Are any of these acceptable?
1) Charging them a percent based on what the total they actually sell?
2) Charge per number of listings sent up (say for a month)
3) Figure out some tier level charging (Based on what not exactly sure)
I couldn't find exactly in any terms that prohibit any kind of fee's I am allowed to charge my end user to interact with ebay.