In Dec. we went to a store called Chedraiu (sp). We were docked at the Punta Langusto dock. When you walk into town and get on the main road that parallels the water, turn right. You will have about afour or five block walk. You will pass a park and the police station. Cross the main street and you will see a large building set back from the main road. Chedraiu is as close to a walmart as you will find on Cozumel. A lot of the crew go there to make personal purchases. You will find that you can purchase a liter of vanilla for less that two dollars. One word of caution. They will accept american money, but you will receive Mexican pesos in change. Try to have close to the purchase price. By the way they also carry smaller sizes for under a dollar.