I was with you until $10 an hour. In my opinion, you will not be able to find a marketing expert for $10 an hour. You may be able to hire a marketing "expert," but not an actual one.

If your rate was a little more realistic, I'd consider hiring someone who does good marketing but lives in a state with not as high of a cost of living. You can save some money that way, but I don't think you'll be able to find anyone good for $10 per hour.