that is sort of like fundraising for your child to go on a people to people trip- I have NEVER agreed with that- if you want your child to go on that trip then don't expect other poeple to pay for it.
That would NEVER EVER fly here- there is NO selling of candy or anything unhealthy in the schools here. In fact they encourage you not to een send it into school for your own kid!
OP sorry- but I feel that if your child won an award and they need to travel to get there then you should cover that expense yourself and not ask others to pay it.
ITA, this isn't a cause that needs fundraising, this is a case where a parent can't afford a trip for her ds to get an award.
OP, its wonderful he won, and a great experience for him to be able to receive the award however this isn't something you should be asking people to pay for. If you want him to go, then you need to be responsible for getting him there. Sell your things, get a part time job, put your change in a jar and go without things, but if you can't afford it then you can't afford it

ETA This isn't a "school" trip, this is a personal trip. He may have won the award through school, but this is not a school sponsored trip. If it was then they would be helping to pay, and doing their own fundraising for it.