We're at the Royal Sands right now, and I'm happy to report that Soriano is now open on the second floor of Kukulkan Plaza. The prices are quite a bit lower than at the Sands market, and of course the selection is much larger, as it is a full-scale supermarket with Bakery, Produce, Deli, Fresh Meats and Poultry, etc. We bought a very good roasted chicken for 79 pesos (versus 147 pesos at the Sands Express), and my husband was very happy with tacos that he ate there (5 for 45 pesos).