Low fees, i.e. discounts up to 50%, not exclusively as a reward for forum users it is available to everyone under certain conditions. Additional discounts can be obtained depending on the total amount you mix through the service.
Here are the tables
https://tumbler.io/feeFor 99.999% of mixer users, these commissions are not available, since such transactions are rare. I don’t see any point in indicating values that are almost inaccessible to anyone as a guideline. This reminds me of the ads on TV that show prices and then find out that in order to get that value, the buyer has to meet a lot of conditions.