I just read that Enchanting Vellum, used to put enchantments down on paper so the enchanter can mail/sell them, is now going to be available from the Exchanting Vendor. It appears to have a measly 9s 50c cost. This is officially the nail in the coffin on inscription’s vellum market. This is a little disappointing to me with the change to make all glyphs permanently learned, scribes have precious few things that will create repeat business. Even the level 81+ dust of disappearence (the new vanishing powder for changing glyphs) sells at the inscription vendor for 10g, effectively putting a cap on the potential profit that scribes can get from making it.
Fortunately, we’ll still have our darkmoon cards/decks. Check the following links for each type.
A more optimistic opinion of inscription heading into cataclysm can be found HERE. That WoW Insider link has a few more of the things inscription will be able to make listed there as well.