The first day had prices all over the place with people trying to unload all their extra useless items for $1.25. However that did not last long and quickly even sub-par gear was going for over $100! Not to mention all the $250 sales. Unfortunately due to the random range of prices I was not able to get a good idea of how much I should of listed my items for and I am currently stuck with no available auction slots for another 6 hours, which means I won't be selling anything today. Oh well the first day was pretty fun and I made over $300. For a full history of every item I sold go here here
Until the market settles it's possible to make a fair amount of money by utilizing both the gold and real money auction house to your advantage. For example the string of ears I sold was bought from the gold auction house for 1 million gold and in-turn got me $128 in profit. Until Blizzard brings up commodity auctions in the real money auction house, expect gold to be undervalued allowing you to buy cheap items for gold and sell for real profit at a hugely inflated price. My current feeling on why this is happening is due to the fact a lot of players were not able to farm act 2 and later items to sell for gold since the launch of Diablo 3 and thus were stuck with 300-500k total gold and the inability to buy anything on the gold auction house for weeks. But now the real money auction house allows them to bypass that hurdle of needing gold. I am quite sure once gold is able to bought, people will be much more likely to buy gold and then use that gold for items. Making right now the best time to sell your items before commodities sales start.
On the topic of D3RMT and the "Auction House Price" tracking section, we are waiting until the market has settled down a bit before we start tracking. Expect price tracking to start sometime around the start of July.
Other than that I have finally cleared all of Inferno on my monk about a week ago after getting a much needed life on hit weapon upgrade. I am currently spending most of my time farming Act 3 & 4 for items to sell on the auction house.
Click the images if you want to see my base stats and the weapon I used to clear all of Inferno.