lobby, and they were $3.99 each. these are also fine pointed, not extra fine.
now, another tip that i can offer you is to not use an expensive mug for this. i got my mugs from the dollar tree. the reasoning behind this is, higher quality mugs generally have a thicker layer of glaze over them. the glaze on the inexpensive ones is a bit thinner, allowing the paint to soak in more easily.
*note* this is not a fast project to make. it will take several days to cure, so if you plan on giving this as a gift, plan to make it 4 days ahead of time. there are lots 