I'm not sure how to only send the good ones, and that would depend on the recipient's tastes as well. Part of the idea is to try new things, so it seems unavoidable that as I go through all the varieties out there, people will not like some of them.
Some people don't like gummy candy, some really do. Some people are really into "construction kit" type candy, some hate the effort involved and so on.
Perhaps there could be a way to make the subscribers feel like they didn't lose out even if they got something they really hated, but not sure how that would work exactly.