The BlackBerry PlayBook launched at $499, was cut to $199, then $99 for employees, and likely has a successor on the way, so you'd think the story might be over, right? Well, it's now available for the low low price of free to Android developers who register and submit an app to BlackBerry App World by February 13th. A tweet by Alec Saunders, RIM's VP of developer relations revealed the offer, with developers simply needing to email the name of their app to email@example.com. The PlayBook added limited Android app support in an effort to shore up its lineup, but it's not a good sign if developers are needing this much encouragement to help stock the store. At least this is likely the last "price-drop" post we'll ever have to write about the PlayBook — short of a giveaway deal at Walmart, or RIM deciding to pay people to take one.