In order to have a nice full plant, the minis you get in the shops often have several cuttings going in them. This means they will be competing with each other so some repotting is in order. You can get a nice border hedge out of what you have!
Also, whatever the label says those won't do well indoors. They should be looked at as temporary indoor plants and nice freebies for outdoors. They are tough and don't require a lot of attention (why DO you think I like them?)