Looking at the current market situation, that's the way I'm leaning for sure. I don't generally trust "used" batteries anyway, so I consider them a necessary new purchase. Besides, a couple of 148's with the stock is enough for me anyway. My distrust for somebody else's batteries stems from 25 years of RC flying and trading. Batteries are one of the easy places to get burned, in more ways than one. They are also one of the easy and most affordable ways to protect your investment by buying new so you know what you've got.
If stuff was half, I'd consider it. I'm just not seeing anything resembling those kinds of margins, at least not yet. That's where they should be, IMO, but it just isn't happening because people want to minimize their losses (human nature). My bet is that the used market is and will remain stagnant until new inventory is gone, as I said above, or until people realize that if they want to sell, they cannot sell them at "new" prices by throwing in a couple of essentially "cheap" bonuses. This type of market (RC/production/photography professionals and advanced hobbiests) tends to be smarter than that.