When you first teleport to the store, located on the Cervesa Island sim, you will be on a fenced, grassy prim connecting two simple-looking buildings. One is the Gallus Store, the other is a place called Lui.
Lui sells only four items: two different tattoos, a set of leggings, and a skeleton bra, which is a black bra with skeleton hands on each up. I assume that this isn't the main draw of the area, so I'll go on to talk about the main store.
Gallus is the store I was given to review, and the small selection was a bit disheartening. But then I remembered that the store specialized in poses, not animations. The poses sold, while few in number, are rather creative and fun all things considered, and plus there's fourteen of them. Gallus boasts the fact that their poses are unisex, and, although some are, one wall was predominately male, while others were predominately female. I assume that the owner meant a unisex SELECTION, which makes sense. The store itself is small, 20x19 by my measurements (building is allowed on the land), but at least has a decent presentation.
What surprised me though is that, judging from the prices I saw, everything is free. I could be wrong in this, but that seems rather interesting that a store would offer its selection completely free. There is a gatcha in the store though, that you have to pay L$100 to play. While at first I thought that that was insane granted everything being free, there's probably some exclusive poses in there that are privy only to those that pay to play.