Rithmic R/API avoid $100/month minimum?

Two brokers have told me that there is a $100 per month minimum to use Rithmic R|API. 10 cents per side with a minimum of $100 a month.

Does anyone know of a broker that does not have that minimum fee.

Alternatively, there is no minimum usually to use R|Trader. Can one just use the API on the R|Trader account without meeting the $100 minimum?

As a still further alternative, if there is no minimum to use the R|API on a Ninja Trader account (there are two different cases of this - Zenfire or Rithmic feed), would that be a way to avoid the $100 minimum charge?

Thanks....