If you're in the market for a BlackBerry Q5 in the US you're in luck. Best Buy is offering up an unlocked Q5 online for $499. While it's still a bit on the high end of the price scale, at least Best Buy is making it easy for potential buyers to snag one easily. As this is an unlocked version you'll be able to use it on most GSM carriers with your current SIM but CDMA users (Sprint and Verizon) are sadly out of luck.
The devices are in stock now with a ship time of 1-2 business days so if you happen to be in a hurry to pick up a Q5 (and why wouldn't you be?) then they've got you covered.