I sold one business for the street value of the equipment without any guarantee to the buyer that he could continue my business relationship with my accounts. I had no contracts since I have always done business on a handshake and my word. It got me out of the business at 52. I had already started another business, so I just went into that one full time until I ultimately retired last year. The second business I just folded and left a message saying I was no longer working in that field.
What you seem to want is for someone to buy your business on faith with no contracts and the hope they can keep it going. In business terms that is called "Blue Sky" or "Goodwill" and it will only get what someone is willing to pay above and beyond the value of your equipment, inventory and business fixtures (desk, chairs, etc.) Have you considered having your business appraised by someone who specializes in selling businesses like yours? Another option is to sell it to someone who wants to own a business and contract with them to do the work for X amount of time as a condition of the sale. They will probably want a "no compete" clause written into any deal for the business or a contract for your services so you can't sell and then cut their throat after the deal.
