How much should I charge for headlight polishing with my nano- 1 step with blue pad and DP AIO headlight polish - spray with OCW, P808 or something similar

I was thinking 20 a headlight or 35 for both ?

I am asking because I want to make a small flyer to put on cars at work so I can possibly make money while I`m, well, making money (at work) on my lunch break.

What do you all think?

I`m not looking to make a killing, just some money here and there and I work at a very large call center type building and there are LOTS of potential clients here.