The difference lies in the different functional designs. Each version has the appropriate requirements for the special case and can also be upgraded later.
In general, the software is designed to be installed and operated on our server. In this case, there are only additional costs from a certain amount of traffic. These can be found in the additional price list.
The number of members is not limited in any package. You can therefore map a system with 1000 publishers, but also 5,000,000 publishers with the software at no additional cost.
We do not charge a fee for the number of transactions. Basically, we are more pleased when many transactions are carried out via your system and your offer on the market is noticed by advertisers and publishers.