Guild Wars 2

What is the normal buy order price for them? I’ve seen the sell price go for 2.3k~, but I’m not sure if that’s the “official” price. Can someone well informed inform me?

http://www.gw2spidy.com/item/74386

I see that someone had an order of 1.7k up. How can I tell if they just removed the listing or someone actually sold them a pair of stompers?