Multiple Drop In Prices In One Class

It would be great to have multiple drop in prices under one class, so separate classes do not have to be made to accommodate a different drop in price. For example, we have a camp coming up that has a drop-in price for a full day and a drop-in price for half day. In order to accommodate both prices, I had to make two separate classes. Being able to have it under one class would make it easier and more simple for parents.