The CEO of credX explains the concept of the credX platform, target group and costs in an interview. In a nutshell:

We are a neutral, regulated marketplace for lending debt capital, offering the full spectrum of instruments (loans, promissory notes and bonds) at very low transaction fees. Our target group is issuers/borrowers from the upper mid-market, large corporations, the real estate industry and the public sector on the one hand, professional investors such as insurance companies, pension funds, credit funds and banks on the other hand, as well as corporate finance advisors or investment advisors.

More details in the interview on page 13.