We provide some statistics that you can find under the account page:
https://mintdice.com/account/investment/overview

If our gambling volume increases, we'll probably create a secondary spin off thread that will track these statistics over time.

Our commission may be on the higher side but it's necessary to be able to compete efficiently in the market today. Many websites have closed their investment all together for this very reason. We'd like to keep it open to stay attractive to as many types of users as possible.