I will sell them at the Global Trade Station when I feel like it, i. e. when I need something.
If you want to make an offer even when I'm not selling at the moment, please tell me if you're willing to offer PokéDollars, Nuggets, or what else. I'm usually not interested in other Pokémons, regardless of their looks, though. However, I may still need some Bees, Cows, Milcerys, and Dittos, so if you have some of those to add, that would increase my interest. :)