Mycopath?

not sure if this is the right forum, bout growin mushaboom so its close enuf....but im looking to purchase some pre-pasturized peat moss, verm, lime and oyster shells for the ph, its pre mixed iwth the rifght amount of mosture and i would much rather buy this than purchasing em all sepperate AND preparing them. found a 6 qt bag on their site for 15 dollars, prolly be another 15 for shipping but has anyone used this place before, had any problems with their deliver or actuall products. thanks!
o ya this is the link

http://www.mycopath.com/index.php?main_page=index&cPath=6