Mostly agree with pedro except the part about "still a desirable skin."
From what PC searching I've done on my own, it seems like all three of the "edge" swords are 20-30k tops in r9. I'm not sure if this will be at all as easy a sale as "still a desirable skin" might lead you to believe. I've seen these edge swords go for a long time without interest. I'm not at all sure if they're easy to sell for top dollar these days. I've never sold one myself, but I've bought a couple very cheap from such situations.
I'm not saying it can't sell for 30k - I'm just trying to warn you that such might take a while.
And this emerald one, people do mistake (honest mistake or not-so-honest maybe,) "Emerald Edge" for "Emerald Blade." That is very likely why you're getting such a huge range of PC here.