It seems the easiest way to buy and sell CS:GO skins on the Steam marketplace, but that's not the only option. If you want to get real money for skins, you will need to use third-party sites, and you may be surprised that the prices on them differ from those you can see in the official store.
The main reason for this is that the price in the Steam market, in fact, is not expressed in real currency. You cannot withdraw funds from your wallet in the game store – you can only spend them there. Because of this, the value of items can be subject to strong fluctuations due to various factors, such as changes in the terms of use of the site. In addition, users who sell things in Steam, often additionally increase the price to compensate themselves for the cost of the system's commission, which is quite large.
On sites where you can buy and sell skins for real money, the mechanism of value formation is different: it is determined by the ratio of supply and demand. Therefore, the price for a particular item is often lower than on Steam. After all, it is not surprising that the rubles or dollars on your card are more valuable than the funds on the balance of the game store, which can not be withdrawn or exchanged.
At the same time, the cost of items on different sites may differ. Therefore, those who want to buy skins cheapest often have to monitor several sites. On Lis-Skins you will always find the best deals on CS:GO and Dota2 items with the possibility to withdraw real money.