ANYBODY COLLECT WALMART GIFT CARDS?????

I have a quite extensive collection of Walmart gift cards and am looking to add more. I have most cards from the USA [there are probably 100's that I am missing] with a few from Canada, Mexico, China and Puerto Rico. I am looking for people who have access to cards from Mexico, Puerto Rico, China, South America and where ever else these cards may exist. I am by no means a fan of Walmart but I do enjoy collecting the gift cards so any help would be appreciated.

Most of the cards from the USA, Canada and Puerto Rico have "VL" numbers on the back which identify the card design. I have lots of cards to trade [all of course with no value]so I hope to hear from you soon.