OldShooter
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
The OP will probably get a better price if he can find a buyer who will value the intangibles in the business like the reputation, employees, etc. IOW someone who wants to buy the going business and continue it.It sounds like you’re primarily a service business? If so I believe they are ordinarily sold at a multiple of the annual billings as typically the acquiring entity is buying the current book of business. Usually the seller sends a letter of recommendation to all of the current customers, recommending the acquiring entity. The buyer and seller would have to agree on the multiple of annual billings and the period over which the buyer would payoff the seller...
A buyer who really only wants the customer list will not pay as much and he will probably have little interest in the hard assets and possibly little interest in the employees' skills, customer relationships, and experience. You never know for sure, though. There are no rules.