Title says it all. you can take part of the sale fees off so that the total cost of an auction stays the same. But we need non-refundable deposit or posting fees. This would do two major things.
One, it would eliminate the people posting items for extremely high prices hoping to catch ppl thinking the comma is a decimal. ie posting 1 item for 788,101 hoping people think the comma is a decimal and the item costs 788.10 credits. If they have to pay a % of the expected sale (the 788,101) this will stop. Right now they have nothing to lose, even if this only works once a month its pure profit for these jerks, they just have an alt repost the items every 2 days.
Another possible solution would be to allow us to ignore sellers so they don't show up when searching. But that seems like a clunky way to go about it.
Two, it will eliminate the people that flood the market with crap either without knowing any better or for the gold farmers. My server has 1 account that completely floods the implant market on the weekends posting 12-16 of each stat at each level. The prices he lists them at is way lower than the usual market and the bulk of them do not sell. What this means is that EVERY single biochem on my server is useless during the weekend unless they want to sell at a loss or at cost to compete with this guy. And like problem one he loses nothing by doing this even if 90% of them don't sell.
Almost every real world auction house (and most mmos) have this feature for a reason. To keep exactly what is happening on the GTN from happening. Non-refundable deposits make you think about what your doing not just spam stuff and see what happens.
There may be other threads about this. I looked for a search option to check but I couldn't find it.