The fastest way to sell your skins and get instant cash on your Paypal, Webmoney or Bitcoin is CSGO.Cash site.
All you need to do is paste your trade url -> check prices -> if it’s ok send your item to bot, choose payment method and get your cash.
But most of the times you wouldn’t like the price they offer. It can be increased by loyalty program (the more you sell -> the more $ you get per item).
If you are not in rush, you can use these sites, which are not automated – you can set up your own price for item, but you will need to wait before someone actually buys it:
Lootmarket.com – Sell your skins (Dota 2 favoured) , withdraw to Paypal, Bitcoin, Skrill, Qiwi, Yandex Money, US Bank Transfer, Webmoney, OK Pay, Perfect money, Paxum, Payeer, Ecoin.cc.
Selling fees – 10% (can be decreased to 5% with their loyalty program);
Withdraw fees from 0% to 7.5% depends on withdraw method;
No need to pass verification process
Opskins.com – Sell your skins (CS:GO favoured), withdraw to Paypal, Bitcoin, Direct to your bank account
Selling fees – 10% (can be decreased to 5$ by buying subscription – 5.99$ for 30 days)
Paypal fees around 3.6%, Bitcoin fee – 1%.
Need to pass verification process (18+)