Longsword would be worth quite a bit... Id say over 700ecto. but what items are worth and what people would be willing to pay could differ quite a bit in this market.
I sold the q7 15>50 longsword I had for 600e about 2 years ago not that it helps much now but i would personally shoot for 1ke. It is worth more but the odds of finding a buyer isn't too hot anymore.