World of Raids has pointed out some lowered enchanting costs that are showing up on the latest build of the public test realms. However, changes at present only seem to apply to enchanter-only ring enchants (if you're not familiar, these enchants soulbind the item when enchanted, so they're only useful to enchanters), so if you aren't an enchanter, the following is probably of no interest. However, if you are an enchanter, happy days! The cost of enchanting your rings seems to be dropping significantly in the next patch. For precise details on the current and future costs, read on!