|This is what I like to see|
My main concern is the tedious feeling I've had with looking up toward the 10k goal. Though, when you shorten the length of the challenge, you increase the impact that "lucky" purchases can have on your success and it becomes less about Auction House acumen and more about landing on the lucky square in the wheel of fortune. But, to impugn myself, I feel like the majority of my success during this challenge has been the simple luck of finding the stuff listed, usually using Auctioneer as my lighthouse.
I've decided that reputation-grind items are a gold-mine for a reseller. The 150 Sunfury Signets I purchased at 50s a piece sold for 1g a piece a little earlier. That's five different reputation-grind markets I've tried, and each has had quick sales. People want their reputation at exalted and they don't want to spend the time to farm the reputation. Which makes perfect sense: In a functioning economy, you do what you do best and trade what you can do for what others can do.
I've also found that Recipes are nice to pick up when they are under 10 gold. Doesn't even matter whether they are the highly sought-after ones. There is a contingent of players who like to have as many Recipes scribed as possible and it seems like they will pay well for the privilege. Remember, for a level 80 player who has been around for a while, putting 30 gold down on the table is like tossing a nickel in a fountain. And I'm clawing my way to 10k by providing the nickel tossers a nice fountain.
Total Assets at the end of 17 hours: About 6000 gold
Go to Hour 18 of the Alpha Competition