At 10% off you probably won't have to worry about escrow.
Way too high. Others are selling the same cards for 70% off and just like you they claim they are not carded. I've bought a couple myself and they work fine.
Finally someone who speaks the truth I'll go lower it's just I'm new and when I put 40% off people jump to think its a scam.
You can sell it for 99% off or 1% off and people will still think it's a scam (and it might very well be because cost has no bearing on scam or no scam). This is an anonymous forum dealing in anonymous untraceable currency for non-physical items so one has to ASSUME everything may be a scam especially for someone just appearing on the forum claiming what they sell is "legit" which is pretty much impossible.
I can sell you a lot of "will-not expire" or "never will die" or "lifetime guarantee" codes that have died long ago real cheap.
That being said there are MANY sellers selling W.F. cards obtained from the same or similar sources you obtain them from for 30% of FV. Usually they work well although I can sell you a $100 one that recently died for 10cents if you're interested.