How much mesos should you put in donation box in maplestory?

It depends which box. Usually i see people going to sleepywood to donate i dont know why. If you want to donate for donating good for you. If you want to donate more than errybody else to get the Donation King medal, try around 800 million mesos at sleepywood. It may be more or less because each month it will change. Or try other towns to donate because less people donate there