For years Amazon has been selling some of its most popular products for less than their asking price - sometimes way less - and you probably never even realised. Welcome to the wonderful world of Amazon Warehouse, where the corporate giant offloads its (barely) used stock at discount prices.

What is Amazon Warehouse?

Amazon Warehouse is a sub-site where the company sells on stock that customers have returned for one reason or other, offering it to shoppers at discounted prices. Other times, the stock can be items that were damaged in the warehouse or lost by Amazon staff (but later re-discovered).

That might sound unappealing at first if you're not used to buying used products, but remember that in a huge number of cases these returns won't really be used - they'll be products that people tried once, decided they didn't want, and returned almost immediately. You might be able to get something that's almost new or simply has damaged packaging at a lower price, which is no bad thing.

The Warehouse range covers products across most of Amazon's catalogue, so it's perfect for your next big tech purchase or just for stocking your kitchen cupboards or buying some new clothes.

Amazon is also good about detailing the condition each product is in, with broad ratings like 'Acceptable', 'Good', 'Very Good' or 'Like New', along with more detailed descriptions of any specific damage or imperfections for each specific product. Each product has also been tested by Amazon staff, so you can be guaranteed that it will have at least basic functionality.

Naturally, prices also vary according to condition, so for a given product you might find multiple Amazon Warehouse offers at different prices depending on the condition each is in.

How do you get Amazon Warehouse deals?

There are two main ways to access the best Amazon Warehouse deals. The first is simply to visit Amazon's dedicated Warehouse Deals section, where you can browse by product category and look for whatever you want. You should also keep an eye out for seasonal offers like bigger discounts across certain product categories, or even extra discounts across the whole Warehouse site for a limited time.

The other way to find offers is simply to browse Amazon normally and keep an eye out for the link to buy a used version:

Click through here and you'll find a list of used versions at various prices, so you can pick which you want. Take note though: not all of them will be part of Amazon Warehouse, as some will be just be used products sold by other retailers through Amazon. Look out for the Warehouse logo to be sure.

Others should hopefully also work well and save you money, but you won't get the same guarantees as the official Amazon Warehouse program.

Remember that because the availability of offers is determined by which products are returned to Amazon, Warehouse stock can change rapidly - making it well worth checking regularly, and ordering quickly if you spot a good deal.

What is the Amazon Warehouse warranty and returns policy?

Perhaps the best part of using Amazon Warehouse is that it's still subject to Amazon's usual returns policy and customer service. That means that if you're unhappy with a product for any reason - whether it's more damaged than you expected or it's simply not quite what you wanted - you have 30 days to return it for a full refund.

However, it's worth noting that for the most part you won't get the benefit of a manufacturer's warranty if you're buying used, so you do take a bigger risk on any faults that develop beyond the first month.

Because every Warehouse product is also fulfilled by Amazon, they're all eligible for next-day delivery with Amazon Prime too, which is always a nice touch. Check out our guide to Amazon Prime for more of the other benefits it gives you access to.