The people who was "spamming" your thread were just people who in fact told you the amount that people pay for keys ( in sythe ) or in other LEGIT website. Being honest $2.15 is a considerable price but only for STEAM the steam wallet isn't a real wallet where you can withdraw that money and get it IRL. It's just a wallet for STEAM and only for STEAM. That's why the csgo items ( and I believe many others ) lose their "real" value. Take this as an advice/tip.