Why ask here? Who knows what realm you're on? Even if I knew, and it was a different realm than mine, how would I know the price on your realm?
So, let's use logic. There is an Auction House in each of the Old World major cities. You go there and check the price for one Titansteel bar. Now you have a good idea of what it would sell for. If I had the mats and needed one, I could buy it from the AH or get you to make it. The only decision I have if you charge the same as the AH is the cost of the mats (if you ask me to provide them). And if there are no Titansteel bars on the AH when I want one, I'll pay even more if I really, really NEEDZ it!
Do not despair if you did not think of this on your own. For I am The One, I am He Who Knows All, I have The Gift.
Yeah, sometimes sarcasm is warranted.
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"the people can always be brought to the bidding of the leaders. That is easy. All you have to do is tell them they are being attacked and denounce the pacifists for lack of patriotism and exposing the country to danger. It works the same way in any country."
Hermann Goering, April 1946.