You need to figure out what you want to be? The low cost guy on the block offering the cheapest meat and sides in order to make a profit or a higher priced caterer who only uses the best meats and sides? A caterer can not compete with a restaurant that does drop off and make any money at all. You can't be everything to all, pick your market. Get a website, add pictures, lots of content and pages and some special deals as your min.
I have a few packages, the one for chicken includes cole slaw, baked beans and rolls. Min price is $13.95 per person plus 15% gratuity and sales tax with a 50 person min.
Pricing is really something that is driven by the area you are in. I am in an affluent area so my prices work, I'm not the cheapest and not the most expensive. I cook on-site and provide servers to dish the food at a buffet table and I include plates, utensile, napkins and condiments.
I have a friend in an even more affluent area and has been in business longer and his min price is $17.95 per person with 75 people min.