Dumb question about the cove Eternal Flasks
So, this might be a dumb question, but I have been really examining the healing Eternal Flask from the Cove. It seems extremely expensive to me for what it provides. I could make every version of one of the other cove items to the max for the cost that this item has. I guess the highest version of the flask seems good as it is heal every 5 minutes. However, I only have a level 10 character and would get a cure serious wound potion for an extreme amount of cove items.
Am I missing something or being dense on how elite this item is?