Quick question

I know this must have been asked enough times, but I recently created a business card for free. Now someone has asked how much to get one done, no logo work needed, as person already has a logo. Basically person wants a front and back new designed business card.

I know there are factors to the total cost like my experience and quality of my work. I guess I would just like to get an average of what people are charging for this kind of work and what other factors you guys would consider in giving your quote.

Should I begin with charging per hour until I get more knowledgeable as to how long it takes me on average to do the work?