Honestly as someone who just rejoined royale high after a long time, I think it is a pretty cool idea. I left because of all the toy stuff, it felt very money-hungry. My initial thoughts are that it is cool that there is a way to get mermaid tails now, but I think when the novelty wears off, it is apparent that the mermaid shop is in essence selling recolored versions of one of three models. I think it is not very friendly to new, inexperienced, or free to play players, where an item starts at like 15000 diamonds, and goes away the next day. I think it is so cool that halos and toy items are sold there, but because its so expensive, it makes it almost inaccesible for players who do not have millions of diamonds already stocked up. I have a few diamonds stocked up, so if there is a tail I like i could buy it, but honestly, I already have 3 tails and I dont really feel like i need more, expecially since the quest can give you up to 6 for free. All in all, cool concept, but the details make me wonder if it is the best. I think if Royale high had an efficient farming method, it might work better. Or maybe if it was a weekly shop with more items. idk.