Royce I dont think anyone can really pc it.
The best thing is, know what you paid and try to get it back + listing fee or may be a small profit. Unless of course it was such a steal

I heard from SZSZ a 100 ee lvl 15 sword sold vs 1500 fg today.
Logically this sword is easily worth that but I could venture to say 2.5-3.5k for the vanity