Armor prices have been adjusted a lot. Non-enchanter armor has been raised, and enchanter robes have been lowered. ITEMS THAT ARE ALREADY OUT THERE HAVE BEEN UPDATED AS WELL! We usually don't do this... but we didn't want people trying to cash in their old chainmail armor at cheapo prices while trying to buy partial plate armor at the new high price. At least now your armor will be worth its real trade-in value.
Please note that NOTHING has changed on armor except prices.
Sorry this took so long... SOMEBODY has been telling me all along that prices were way too low. But I didn't really understand the extent of the prob until I took a look today. For instance, enchanters at level 15 were paying 30 plat or so for their top and bottom combined, and warriors at that level were paying 6 plat for both top and bottom combined. Now things are more even.