I'm not trying to insult you, I think your price for the STL files is very good. But 2500 Euros is almost $3,000 us, and that's a lot of money for an all plastic tank. Mine has most of the same features as yours, like opening hatches, Servo operated elevation and Traverse and a flashing LED in the Servo operated machine gun and mine runs on the IBU2 Pro instead of the elmod, but at the end of the day we all know steel brings a premium price and plastic is usually cheaper. You did a great job on the tank and it looks excellent, but I truly believe that a more reasonable price for an all plastic tank without TX/RX would be around 1,500 Euros. I think that would be much more reasonable, but that's just my opinion. I'll bet if you add up the actual cost that it took you to print and assemble the tank and then add 20% for profit you still won't hit the 1500 Euro mark. But I'm sure you won't have any trouble selling it, at the end of the day it's a really good-looking tank and you really did do an excellent job on this project.