What really makes me suspicious is the seller 'finding' a mag after half a year and knowing it was your mag. Of the hundreds of guns they sell, they determined this is your mag. I think word got back to them or they saw this post or something. Is it possible that they found a mag and remembered you called once 6 months ago and said you were missing one? I suppose it is.
I 100% agree with you on this. Suspicious to say the least. 6 months later and it's magically found? Did they not clean at all? It fell in with all of the other mags just found laying arbitrarily? Hmmm.... Right...