No, actually by sealed I meant sealed in a bag. I offer truffles unwrapped (for placement on platters for parties, etc), individually wrapped for favors or in gift boxes. If you make those trees and they sit out unwrapped, I think they will lose some of their freshness. They would be fine for a day or two but any longer then that and they don't taste the same.
We had some 4 day old truffles and compared them to the fresh ones and every single kid and adult choose the fresher truffles. I am just really picky about stuff like that. I make the cakeball 'dough' and wrap tightly, freeze or fridge and then take it out when I need it. The added storage time makes for more tasty truffles too. HTH