Could you make an accurate list of things and their cost (and your profit if there is any) that constitute of the 3 BTC?
No, of course not. What a ridiculous request. I wouldn't be asking for an NDA if that were the case.
I'm really not sure what motivates so many people from the EU to insist upon casting aspersions upon this project and demanding a minute accounting of 30 BTC. Are you considering spending 1500 EUR to fly here and attend the Boot Camp, and that's the reason you are concerned about 3 BTC? Or are you just trolling?
Where did you say what the NDA is to cover?
What's wrong in people knowing that, say, x meals for x days makes up for 20% of the total cost, etc.
If you haven't noticed yet, giving more info would give you more credibility; just wanted to be helpful.
BTW. I found a flight for 1079 EUR from Berlin after a 3 min. search, definitely not considering it now, have fun.