He wants a trial period

A true businessman. He told Anna that he likes the idea very much and sees good fortune in it. However he cannot take such a big step on a whim. So he needs a trial and training period. During that period, Anna will get trained in the art and in return for the fees of training, she'll work on a trial basis period of 5 months for the brothel for free. After that if the idea seems to work out, they'd seal the deal as Anna proposed.

"How's that sound for you, Miss?"