For the last few days, I've been attempting to figure out what my items current market value are, if anything.
This is extremely hard to figure out, due to the auction house. I have attempted to input items into the in-game search, but with the limit of only three criteria, you can't input any rare items fully. Even if you could, though, the auction house is not a very good way to determine what the market value of an item is, due to it displaying what items are listed for, and very rarely shows you items that are sold. Without knowing if an item sells at the listed price, this data is not very helpful at all.
I have tried listing items that look similar at roughly the same price, and they rarely get sold. Even when I start the bids extremely low, it's even rarer to even get bids.
I also tried the human element: I bit the bullet and posted on the bnet forums. Unfortunately, with the amount of users all attempting to hawk their wares at the same time, the only way to get a response is to continually bump your post back to the front page. It took all of twenty minutes to bury my request for a price check to the fifth page. Even with multiple bumps, I never got a response.
I have also tried the d2jsp forums. While not as busy as the bnet forums, it suffers from the same problems, and you have no idea if anyone is telling you the truth, or giving you a low valuation in an attempt to score themselves a deal. I managed to get a single valuation, out of the roughly dozen items I posted, after two days.
I've even tried a few websites that purport to tell you what the market value of your items are, and the one that actually provided a value, didn't seem to be even close to what I would rough it out to.
I have read What factors should I use to price an item in the auction house?, and the tips there certainly help to give you an idea on what items might be worth something, but it doesn't address trying to figure out what your items are worth, other than to compare against the auction house.
Items that roll extremely high on their stats are worth MUCH more than if the item had rolled the exact same affixes, but with lower stats. The closer you get to maximum rolls, the best I can determine is that the price increases almost exponentially.
Does anyone know of any resource (person, website, utility, whatever), that I can use to basically throw my item at he/she/it, and it comes back with a general estimate? Preferably within a reasonable time frame, but so long as it's reliable, I can wait a few days for an answer.