The price will more than likely depend on the hardware it's running on. There's a strong possibility they will be running it on the same hardware as this years devices, and that the price will be lower because they haven't had to do hardly any development (a very minor change to the Q OS) and that'll put them into a more pocket friendly price range.
There's two reasons why I think BB would look to do that - First, they know that even if they sink huge amounts of money into cutting edge chips, most users won't see any real benefit from that. Remember, there's already diminishing returns in the Android and iOS space, with cutting edge devices there now being differentiated by finger print scanners and better battery life. Even on platforms with a large gaming presence, there aren't the games to make use of the power available in most SoCs.
Second - BB still has its reputation for being about enterprise, but in the past year they haven't really lived up to it. If you are a company looking to buy even a few dozen of the 2013/14 berries, then that was a big chunk of change even today. I see plenty of businesses still on OS7 devices because even the very significant upsides of BB10 weren't worth the cost they had to pay.
BB can't compete in the high end market, and in many respects they've never been able to. Android will always be there first, because that space is so competitive and full of industry giants. So it wouldn't shock me at all to see them look at all this and slide in at a mid-tiered price. Maybe that's just wishful thinking on my part, but why would they just keep pushing into a premium space that they can't keep pace with?