Competition provides consumers the lowest price for their goods, in this case for both buying and selling. This idea does not present a monopoly - multiple people can participate and compete, so price fixing in order to gain a profit is hard if not possible.
http://en.wikipedia.org/wiki/Economics
My mind is open, but when you make a post so obviously misinformed you can not expect me to listen to it.
~ @Coelho
I dont expect price fixing or collusion among shop owners. I do expect shop owners to figure out how to generate the most profit possible on whatever their item or items of choice is.
With this system, there will be huge risks taken by those who choose to buy access to the traders, and with all risks we try to minimize the potential damage and maximize the potential upside. To me, the easiest and fastest way to do that would be for shop owners to trim their buy prices. I could be way off in my thinking, but it seems like the most logical line of thought in this type of scenario.
On a different, but related topic. You mention that both trader and access prices are subject to change. Would this be linked in some way? Example: Halfway through the month both drop by 15% It would feel pretty rough to have work, school, family obligations, or some other reason to not log in the first day of the month and miss out on the original trader prices but still have to pay the original access price.
There is no luck involved, the traders will come up with an item(s) that is (are) currently overflowing the market.
~ @Dockson
I only saw Onis post that items were going to be picked by admins, but nothing about how. Did i miss it somewhere?