AiV juices are pretty tailored to the American palate. They are sweet, fruity, and have a lot of bakery/malty undertones. I can see why someone who is not accustomed to living in a place where they put sugar in EVERYTHING might not like them.
(they put High Fructose Corn Syrup in most BREAD here in the US, and now the Department of Agriculture is trying to pass a law to allow milk producers to put it in MILK and still call it milk...
Everyone has different tastes, and taste preferences are not just individual--they are regional, national, cultural and even genetic.
So don't worry if you don't like AiV juices. Some folks do, some folks don't, Just like some folks are crazy for Pluid, and some would rather vape the juice from an old pair of boots than Pluid... ;-)
Someone will want that juice--you shouldn't have much trouble passing it on to someone, either in person down there in Mexico, or through the Classifieds here. I can't see a problem sending it to the USA from Mexico through the mail--just package it with lots of padding in a sturdy box, and tape the lids on the bottles with electrical tape so they don't leak...