Well, I am not trying to rain on your idea here, but I think you are approaching this backwards. Please for you and your families protection, start with the business license, insurance and (if needed in your area) health permit, and then go for pricing.
I am not knocking your abilities or how clean you keep your operation, but CYA. It is where we started and would not have done it any other way.
KCBS CBJ 9831
Large Spicewine, Backwoods Smoker (Party), WSM, Oklahoma Joe's Offset, Wood Fired Oven