Wow, all these people acting like spending a lot of money on cubes is terrible. What about those people who spent $2000 for a real Teraminx? Are they losers who didn't plan ahead? I don't think so.
I say do whatever you want with the money, don't let the thought of "the future" and college change what you want. If you are really into cubes go for it. I've spent thousands on cubes.
~Chris
Just because many people
have spent that much doesn't mean it's a good idea.
The OP mentioned that this all came on because of financial difficulties in the family. Why not put away even a fraction of the money in case those financial difficulties arise again?
Sure, if he spends all $900 on cubes, chances are nothing bad is going to happen. But there are numerous opportunities for good lessons to be learned here. Charity has been mentioned- donating a small part would be a good experience. Learning to handle a decent amount of money and save it would also be a very good experience that many people his age don't get.
I'm not saying don't spend any of it, or donate all of it. Even a tenth of that sum could make a sizable impact if donated to a local charity, even a tenth of it could be incredibly helpful in times of financial need.
Also, I'll bet the people that have $2000 to spend on a teraminx have some form of income.