The commission is a minimum $1

I signed up for a pre-funded account last year, commission rate were very low. But if I can share a little hack as it were, indicate an amount higher than $100 for MIP because if you do so your commission rate would be more than 1%.For example, if you indicate $100 for a stock priced at $25, they would purchase 3 units for you as they take into consideration their fees in that $100. The commission is a minimum $1, thus your commission rate is approx. 1.33% instead of 1%