I've gotten the comment that you shouldn't fix what's not broken. But I can honestly say, the market system here is causing quite some instabilities. So I just thought I'd put this up here after looking around at some of the posts.

1. Taxes - There is not currently a meaningful, immediate charge. There's no point in having a separate listing and selling fee when in actuality it's just put into one. There is a reason for having a listing and a buying fee, and it's sole purpose is to stabilize. Not a difficult concept to understand.

2. Undercutting - I'm not here to bitch about all the players that undercut. Undercutting doesn't ruin a market, but price changes on a whim do. You'll find undercutting everywhere. The only thing that means is that your listings take slightly longer to sell. You're still getting more money. Allow undercutting, but don't encourage it by not having a listing fee, as I've mentioned above.