This is one thing I have started to hear more frequently with the increase in popularity for LoL markets and it is on our agenda to improve with product development this year.
I plan on starting a small "ambassador group" with users who are actively engaged in gaming secondary markets and who have ideas on how we can improve/add features etc.
One of the things that we experimented with last year, was changing the default listing. Currently, it is based on Feedback (which is another thing we plan on revamping, but that's another topic), however we had changed it according to price. Therefore, the sellers who had the best prices ended up on top.
This lead to 3 issues:
1) Large sellers began to complain, that with all the positive feedback that had acquired, it essentially amounted to nothing in the end (which I could argue against). This impeded their margins, because they found it difficult to compete with organic sellers (i.e. average Joe who had a ton of gold to offload from a lucky AH sale)
2) Sellers began to compete FEROCIOUSLY on price to stay at the top. A price war ensued were sellers were trying to reach the top spots by matters of a few cents. This drove the overall market value +DOWN+ (buyers. ,*loved* this), but in the end it presented some clear and present danger to the market overall as the price competitiveness ultimately lead to a diminishing value on a per unit basis for currency. Ouch:'(
Some of you may remember the price wars in RS + other markets from earlier 2014 in 2Q.
3) This lead to an ''unstable' user experience for the buyers. Instead of the solid, well established sellers getting the top representation, buyers began to see first and foremost 'low-medium' or 'organic' sellers which could match the level of service as the sellers with higher feedback (i.e. when buyers were accustomed to getting their gold in 20 mins, they suddenly purchased from the user in the top spot, which wasn't online, or delivered after 8 hours). In some markets, this lead to buyer attrition, who ultimately did not end up re-ordering. There was a loss to ecosystem which impacted not just PA, but also sellers around.
All of these issues are NOT insurmountable, they just need to be thought through well.
That being said, I would like to lend better support for the organic, low-midsized sellers as well and would love to hear thoughts on this.