How Many? is a free Chrome extension developed by Dream.Risk.Create that allows users to easily check how much of a product their competition has available for purchase on Amazon. The free version of the extension works only on Amazon pages with offer-listings in the URL. Once on the page, users can click the icon to activate the extension, which will then return available amounts to purchase if under 1,000 directly on the page. The extension is very fast and easy to use, eliminating the need to add the item to the cart and use the 999 trick manually.

For users who require more features, the premium edition of How Many? is available for a small monthly fee. The premium edition includes the ability to get the buy box quantity, get the merchants listed on the main product detail page's available stock, estimate sales volumes (or use Jungle Scout's sales estimations), sub-total the FBA and MCF available quantity, give estimated 30-day sell-through prices, get the next lowest offer and the available quantity on all offer pages, and more. Additionally, the premium edition includes an iOS and Android companion app, a right-click context menu, and the ability to get available quantities on storefronts.