Ectos?

I just got guild wars recently and I have this friend who used to play back when it was released and he said that he could give me some ectos or something. they're worth a lot apparently, but I'm just curious how much could I sell 1 ecto for?

Thanks.

13 = 100k these days, so 1 could be sold for about 7.7k to a player (maybe a little less)

merch price(buy)+merch price(sell)/2= price

It's not only for ecto, but for any rare material


13-14e=100k
1e=7-7,5k