Off the top of my head I would say that is decent for youtube.
You should be looking to convert at least 1 in 100 visitors when you have sourced them from the right market audience.
How much you make will depend on the amount of money there is in your market.
Don't forget to factor in how much your competitors can afford to spend to get one conversion also.

I don't see why you should not be able to find a clickbank product that will pay $30-47 to affiliates for front end sale and to convert 1 in 100 of your visitors for $300 - $470 per thousand.