No, that is a reasonable price... When I bought my couple of double chests of lapis blocks from the community I was paying about 18-20 rupees per block!
Rhino, next time you ask for massive quantities of stackable items, please make a sell chest for quantities of 64. I went to your place with a chest of lapis blocks but turned back. Later my son, Julien99999 voluntered to bring it over to your place, resulting in a noticeable dip in your rupee balance I'm sure. Would have more for you but I'm building a massive lapis tower at the moment (I love Lapis) at my res on smp 4.
alright i set one chest up to sell in stacks sorry.... i just didnt think people would have that much!!! thanks