How much does Trac charge?

I'm curious to know, could you please elaborate on the pricing structure for Trac? Specifically, what kind of fees does the platform charge for its services, and are there any hidden costs that users should be aware of? Additionally, does the pricing vary depending on the level of usage or the type of transaction being conducted? I'm interested in understanding the full financial picture before making a decision to invest in or utilize Trac's services.