I'm not a very materialistic person. All my possessions can fit in to one room and I've never even owned a car. What difference does it make if it's 50 M or 500 M? I wouldn't spend it all. It would obviously be a team decision (and if a family/friend emergency came up that would change things), but my answer would be "No". This could change in the _long term_ if we want to move on to different projects.
You don't have to believe me, just know that money does not equal happiness and in my humble opinion success is the amount of life you control.
You can control a whole lot of life with 500M. 50M for that matter. I'm not saying you're wrong, but having that kind of money in the bank opens up a lot of possibilities. You don't suddenly have to become materialistic just because you could.
I'm honestly not trying to be rude by saying this, but it's hard to believe that your ultimate goal in life is to sell tickets to people. If it is, more power to you, seriously, but isn't there something else you want? Something that TicketStumbler is a means to achieve later?
I think it would be great to work with founders who are also hackers and love what they do. But if I were an investor I'd be rather concerned with the notion of passing a $500M offer for an investment of $15k and a couple of years.
You don't have to believe me, just know that money does not equal happiness and in my humble opinion success is the amount of life you control.