AVOID THEM!
I bough 2x Amazon $100 keys and both keys that I bought fromthem were used at the same time November 24, 2020 6:05 as Amazon support indicated.
Neither G2A nor their sellers were responding promptly.
They delayed me for 7 days, begging for responses from their sellers, after that I proceeded with Money Claim of G2A which turned out another process to delay you and make you tired asking for the refund.
They have asked me for opening a case with police and other procedures in the hard time of COVID that will make you just forget about the refund!
They are literally scammers and I hope their bossiness will be closed to free the Internet community from such bad experience and thieves.