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Despite I have asked about the price you never told it, why? How can I find you a buyer if I don't know the price?
Every normal human being will ask for the price and I fully understand this. You can say even an estimate or add that there is a possibility of an agreement when it goes to the price, but this is just impossible (in my opinion) to look for a buyer without knowing the price at all.
So one last time, how much you want to get?
It is the source code of that. For example, you can buy Windows, but you cannot buy its source code. And there are people who will pay a lot of money to get it.
OK now I can see some value, but who can need this and for what? The only people I can think of are publishers am I right?