Low toliets

To answer the OP's question, yes, I have. Casa de Plomero have the higher ones. However, I would take a plumber with you because the distance from the wall at the back of the toilet to the drain hole comes into play. Luckily, my bathroom was being renovated and that very important detail could be circumvented. I am sure there are other places in Guadalajara (Home Depot?) but I did not have the luxury of waiting since the previous toilet was broken while attempting re-installation and, ahem, needs must with only one bathroom. As it was, I had to pee in a bucket for the whole day.
In addition... choose a toilet that has porcelain well back into the bowl drain and also a water hole from the tank at the bottom and opposite the drain in addition to the drainage holes under the rim.... all that makes for a better flush.