Pinkbike.com uses a left side navigation feature on the Buy & Sell menu that allows you to narrow your search. You can choose between the region, the country, or individually select an area to search in via the 'Near Me' option. If you look at the left side of the main Buy & Sell page you should see listings for Canada/USA, Europe, South America, Australia/NZ, and Asia. You can filter your search results further by selecting country or specifying a region to search within.
When you click on a specific category, you can further filter your search by price, type, shipping, and other options.