What is the right price?

Lot's of people wonder this when they start playing on the Auction House.
Shortest way to tell this is this: The price at wich you can afford making profit on the item.
Let's take a deeper look into that. For example let's take Glyphs. You are an smart Auctioneer and you buy your raw mats always very cheap, resulting into a total cost of 1,5g per Glyph to make, yet glyphs vary from 5-100g each. Your profit might be higher if you post at 50g but the volume you sell most likely will be lower.
My personal favorite method will be a deep undercut in such a case. We saw the costs are 1,5g, in this case I would post 1 or 2 glyphs of each for around 5g each. This way your competition might think you are just a noob who just wanted a quick sale and the will buy you out to get the price back up to 50g or even 100g. You just made 6g on your two glyphs, but there are over 300 glyphs, that's 1800g profit by just looking dumb (and yes, these situations really happen). If you do this daily, keeping the price low your competion will most likely will give up wich will give u a lone right to sell, keeping the price so low will people make your stuff buy earlier because a respec will be alot cheaper and since you have no competitors or only few you will also sell in a larger volume. This method is hated by alot of people, that's why you should have a bank alt to do this ;)
Also make sure u have a minimum margin, like for example 20g on Epic Gems or maybe 3g per Glyph, know the prices of your raw mats and go get rich.