[Feature request] Multiple item trades

Hi!

I'm sure this has been discussed before, but I couldn't find it, so here it goes.

Currently, as far as I know, you can only create trade posts for a single trading event. Whether you sell 20

Jah runes or 1, you can only register one sale: N

Jah runes to one user.

I think it would be useful to have trade posts that can either remain open indefinitely and be sold multiple times, or have a stock count. This would enable users to create individual trade posts for multiple items (e.g.: I have a bunch of

Jah runes that I want to keep trading for other runes) while tracking each sale (e.g.: I sold 1

Jah rune for a

Ber to User 1, another for 2

Ohm to User 2, etc.) and get/give trust without needing to create a new post every time.

Third... ED!

I make trades like these all the time because i like to gamble items like

Griffon's Eye, and i'm left with many of these items and I cram them all into one trade... Would help a lot if this was added!

To help with that I once made a suggestion for a relist feature:
feedback/relist-trades-t1465084.html