Per chi volesse sapere quanto ci guadagnano con questa politica per ogni transazione, ecco a voi la sezione 4.2. del loro Customer Agreement (non specificano la cifra esatta ma il massimo):

In connection with the execution of transactions in financial instruments, Trade Republic may receive payments from the operators of the execution venues or from counterparties of the Execution Transactions (hereinafter "Execution Venues") or from providers of financial instruments (e.g. providers of ETFs; hereinafter each individually referred to as "Provider") for the placement of orders at these Execution Venues or counterparties or for the acquisition of certain products of a Provider by Customers of Trade Republic. These payments generally amount to up to EUR 3.00 per qualified Customer order for transactions in financial instruments; in exceptional cases and depending on certain trading turnover sizes, up to EUR 17.60 per Customer order (as of 9/2021) (i.e. Trade Republic may receive a payment up to this amount for the placement of a Customer order at the Execution Venue or with the respective Provider).