I want to do a set of commissions for people, like.. Ok. Does this sound like a weird idea?

Say I want to do 10 drawings, flat color cleaned up sketches, for $10 each. The theme is going to be Pin-Ups.

So I'd be trying to find 10 people to pay me $10 to draw their character in this set/collection.

Is that weird? Do people do this? I want to take commissions but for this theme only :U I want female characters too. The images will be tasteful if nude at all.

So far my picture themes are:

1. Cowgirl
2. Military
3. Viking
4. Bathing Suit
5. Hawaiian
6. Burlesque
7. Pirate
8. Nurse
9. Teacher
10.

I don't have any other ideas 8(

Help?