Persuasion: What’s the BEST way to say the Pricing?

When saying the price, Say for example:

“My price is $500/hour, but if this is too expensive for you, and I can perfectly understand it if it’s too much for you. However, I can’t accept less, but just let me know and say to me “no”

The “Just let me know and say to me no” increases dramatically the chance that the buyer will actually buy it.