Monthly Collectibles are limited edition items that can Only be obtained here. Each month there will be several items that can be bought and you will get a Random item.
Most credit/debit cards are allowed, Paypal and Oxxo is available in México.
You can go to your Avatar Editor and equip them to show off! Some of them can be used in Mosha Online and other games!
You can pay in MXN or USD. You can change this under your Account settings.