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I don't know anything about the prices of the insulin in Mexico. Most people that don't have insurance do this: "Insulin - If you do not have health insurance coverage you will find the analog insulins most doctors prescribe obscenely expensive. These include Lantus, Levemir, Humalog, Novolog and Apidra. Fortunately there are older, insulins that are much cheaper which you can use instead. These cheap insulins are sold only at Wal-mart and are the Relion Novolin R, a faster acting insulin, and the Novolin NPH, which is a longer acting insulin. (Other pharmacies may sell NPH and R but they sell them at a much higher price.)" I hope the information helps.