340 What's it worth?

Hello all. I have a 1969 340 and I was wondering what it is worth. All the machine work is done on the block. It is bored .030 over, crank is polished, block is zero decked and was cooked out. I built the motor but I made a rookie mistake and forgot to check valve to piston clearance. It dropped an intake valve in #7 cylinder. It put a hole in the piston and wrecked the head.:mumum: :banghead: The other head is good. It is a J head that has been completely redone with stainless valves, new guides, and some porting work done. All of the machine work was done professionally by AOK engines in Minnesota. I pulled the cam and Intake for a 360 I had. The rest of the motor is there. Any ideas what it is worth? I would like to sell it so I can get started on my 67 camper special I bought. Thanks for your info.