We've just developed a new component that verifies if a product is available on all amazon locations. Sign in for Amazon's Associates programs, get your affiliate ID, fill it out in the plugin, and for each product we'll verify if it's available on amazon's location that you're signed in for. Example: Sign up for Amazon's Associates Program for Mexic, Canada and United Kingdom. When a customer will visit your website, on the product's details page there will be displayed the product's availablilty on all 3 amazon locations. That way, your customers will know for sure if a product is available!