Yes, it can last for 17 days, but now what, does it continue to work? Did you just run it on the simulator? To me, it was just temporary luck. Trust me, you can't make money from it. If you're lucky, you might make a little money (I mean very little) or pay back, but if you're unlucky, you'll lose a lot. I may not know too much about other things, but I affirm that I have a lot of experience with script many years ago. If you don't believe it, you can give it a try, but consider all the advice here

Edit: Anyway, I'm glad you came back here and kept chatting, at least, you're not a pushover to sell scripts 

It depends, are you using martingale or some betting progression and your expected value is still negative? If yes then everything will depend on how much capital you have, the size of your bet, your betting progression, and the average time that it takes each game to be solved.

If we have all of that data then we can calculate very accurately what will be the probabilities of you losing all your capital in X tries and Y days, so if you have that data share it and I will try to give you an accurate answer.

Simply he wants us to be his guinea pig. 

Currently Bustabit does have 3 scripts which you can test on.

Sniper
Martingale
Payout Martingale

---

@OP why wont you try on adding it up ?https://www.bustabit.com/scripts/new/editor
Then try it for yourself if it does really work for 17days without lose.