Hello guys,
As some of you may know, I'm mostly an Ab-er.
But, recently I got an inactive account that has over 1000 nc items (clothes, backgrounds, trinkets, etc.- basically everything.)

I don't have any boxes, but would like to start trading nc items for neopoints. (I need NP )

Is that allowed?
Is it possible?
How could I do it?

What could I ask for prices?
accessories , trinkets = 150k NP/per item
clothes= 200k NP/per item
backgrounds= 300k NP/per item
I was thinking about those prices, but am not sure if it would be too much or too cheap.

Could you please let me know how to do this, plus the price range for the above items?
Many thanks in advance, and sorry for the newbie questions.