As you are well aware, prices and costs are highly localized. What is reasonable to a resident of New York or Los Angeles would be laughed at here in Rocky Face GA.
You need to find the prevailing prices for different types of cabinetry in your area. Not the big box stuff, custom cabinets. Most members here in this forum will probably tell you that a \"price per foot\" is nearly impossible to come up with unless you intend to build only a limited catalog of cabinets.
Materials are easy to cost. Labor and overhead are what keeps many accountants employed. How much labor and overhead goes into each cabinet? How much does that labor and overhead cost? How long does it take to build a particular cabinet? What do you want your profit margin to be?
I probably a far too complex model for costing and it would not suit most shops very well. The best cost models are built over time. Without having financial data from past years to compile your costs, the best you can do is an educated guess. OK, not really a guess, but you will have to determine how much it will cost you to operate for your first year in business. This is your operational budget. Then, you have to forecast your projected sales for the first year. This is your income budget. Then, based on the sales forecast, you have to determine how much materials and direct labor will cost. This is your expense budget.
This all sounds very complicated but it really isn't. I will be happy to help you any way I can. Feel free to email me and we can work on this \"offline\" if you would like. Check out my website,
http://www.eCabWorld.com. It is new (about three weeks old) and currently doesn't have a lot of content, but will offer information like this in the near future.
Good luck in your new venture.