Buying cheap software keys can be a great way to save money. However, it is important to know if the product is legit before making your purchase. A grey market license key isn't illegal, but it comes with a risk. The keys may not work properly and you could end up losing money. The first thing you should look for is a reliable website. The best sites are the ones that have a good number of customer reviews. If there aren't many, the site is likely new and isn't selling anything legal. You may also want to check the user ratings, which can be very useful.