Pathfinder

I am working on a new site. A community directory. I am going to charge local businesses (within the county) to advertise on the directory, as well as charge for classified ads and personal ads.

The ads will be complete with pictures of the business or staff, item to sell for classified ads, and of the individual for personal ads.

I am considering an annual fee for the businesses, in other words the businesses will pay up front for 12 months of advertisement.

The classified ads and personal ads will be a monthly charge.

I currently have 50 gigs of transfer before I go into overages.

I have know way of knowing what how much traffic I will get to the site.

Questions:

Would some of you give me input on fees to charge:

#1: For a business to advertise for a 12 month period.

#2: For an individual 30 day classified ad.

#3: For a personal 30 day ad.

What would be a reasonable charge, keeping in mind that I expect moderate traffic, mostly local traffice, but I am going to advertise the site in a San Francisco paper, as well as a Sacramento paper, so there may be some out of county traffic also.

I will have some affiliate advertisement on the site as well so may help to support the site.

The pics of course use quite alot of bandwidth as well as well as the graphics on the site.

If it makes any difference this is a tourist area because I live next to the largest natural lake in California.

Thanks in advance for the input.