Their core values are the quality of service, their trusted shops and the size of their catalog.
The quality of their service comes from good hosting and guaranteed functionality with a team of dedicated technicians 24/7 ready to solve any problem that might happen. They also have a 24/7 customer service to help you in case you got a problem with a store.
They also have tested for you more than 50 shops to make sure that only the most secure, competitive and legit shops make it to their trusted stores page. Their catalog is also one of the largest with more than 25 000 products.
Their users are also a key part since they directly rate and comment on the shop and game pages. The Allkeyshop Team is also key to success, it is composed of managers coming from a wide range of industries, from Blizzard to Dassault.
Another important factor is the community. Because they care about their users, each month they spend more than 10 000€ in a large number of giveaways and others mini games that earns points and coins that you can then use in the reward program dedicated website SteamKeyBox.com
By putting multiple vendors in competition their service drives the prices of games down, all for the benefit of the users, and that is how they always have cheaper prices than steam, sometimes even 70% cheaper.
They also propose a wide choice of different shops so you can always find the cheapest price and your ideal shop according to your various criteria (payment methods, regions, ratings, etc).