If you find yourself smart or funny by taking parts of texts here and there and then try to build nonsense stories, you're wasting your time and this is totaly useless, for not saying stupid.
Nope, I'm neither particularly smart, nor particularly funny, but I do quite like a puzzle ... and there are things that you refuse to say that I'm rather curious about.
At this point, I've read enough to honestly believe that you do actually have the prototype cartridge ... but that wasn't at all certain when you turned up out of nowhere with this story.
I am pretty ignorant about this particular Dino Force prototype game, and so I've been wasting my time trying to understand both the game itself and it's recent history.
While the details may be a little inaccurate, I think that I've got a handle on the overall arc ...
In 2012, people here were trying to club together with another PCE forum in France to raise 500,000 Yen to buy the game from Akiba Games in Japan.
There is a comment in the YouTube thread that the game sells at auction in Paris for 10,000 Euro in 2013/2014.
That gives us some idea of the price that you paid when you said ...
This game was originally bought in Japan, but not by me (I never said that *I* bought it in Japan).
It was then put in auction in Paris where I live. When I saw this, I got some infos from the auction expert who I know well, and I bought it because my initial idea was to make a release (hence the post that you found).
Now in 2015, you're selling this game on to another buyer for a price that you won't disclose (which is absolutely your right).
But, you've given us enough clues that we can estimate a ballpark figure, since you've said ...
We agreed the price and the buyer sent monthly payments until he stopped paying (he owes me 25% of the agreed price which I will keep confidential).
If I could get up to $6500 quickly, I'd definitely opt for it (so no, the guy doesn't owe me $10K) and send the guy his game.
Let's say that you're valuing the time that it would take to organize the "quick" sales of the CDs that you've been offered at $1,500.
That would lead us to an estimate that the 25% figure that the buyer owes is currently valued at $5,000.
Which would suggest that you've already been paid $15,000 out of a $20,000 "agreed" price.
At today's exchange rate, that's a 17,500 Euro selling price.
That's for a prototype that you seemingly purchased for 10,000 Euro.
You're welcome to correct any of those figures, should you wish to.
You said ...
I'm not really trying to make some profit on it. At least that's not the goal.
Really?
BTW ... there's absolutely nothing wrong with making a profit, that's how we all live, you don't need to be ashamed of it.
Just for your info, I once found an unreleased Atari 2600 game: 3D Rubik's Cube. With AtariAge we did a very nice release in a deluxe box, etc. You can check that if you want (and I still have some numbered specimens for sale by the way).
I wasn't familiar with the story around the 3D Rubik's Cube game, so I thought that I'd take up the offer and waste some more of my time to do a little research.
This site gives an interesting history of that particular discovery ...
http://www.2600connection.com/articles/3d_rubiks_cube/3d_rubiks_cube.html