Thanks all I have the items now.

I would like to buy 50 Clay. There is some in the Auction house, but none with a buyout price. 78 silver seems to be reoccur as a price there, is 3900 silver for 50 clay fair? (I'm ok with it if it is).

Not sure what the scheme is worth, I saw in the thread below me somebody mentioned 200 silver for blueprints, I guess the price is somewhere between 200 and the 30,000 the shop sells it for.