Whirlybird roof vents can be purchased online through home goods stores such as Walmart, hardware and supply stores such as Home Depot, and mass retailers such as Amazon. Both new and used whirlybird roof vents can also be found on Internet auction sites such as eBay.
The Walmart website allows users to search all available products for specific models of Whirlybird roof vents, with filtering options to narrow results by factors such as price and customer rating. Every site user has the option to rate all products sold through the site, regardless of whether or not they have actually purchased the item. Ratings consist of a star ranking, ranging from one to five, and a written review of the customer's experience with the product. For certain products, users have the option to check the inventory of local stores to see if that item is currently in stock. If it is, the user can reserve the item at that store and pick it up in person rather than have it shipped to them.
The Amazon Marketplace allows third parties to sell goods through the Amazon platform. Items not sold by Amazon can be subject to higher shipping costs, and typically have different return policies.