Buying rights should be expensive. You are skipping a significant part of the game in order to wield these items.
Also, pots are meant to drain, not for you to stay fully potted for the entire time you are in wilderness. The timer for draining really should not be reset by logging out every 45 seconds. If anything, it should be left as is, otherwise the price will skyrocket. Paying say, 5k for a pot that does not drain until you leave wild will never happen. The average pkr would no longer be able to afford pots, and may stop pking or even leave because it's too expensive.