I agree, I'd stay away from this game or wait until it's dirt-ass cheap during the holidays.
The reasons for these significantly rapid price drops are due to the hardships being experienced within Rebellion. The Oxnard studio has seen a lot of layoffs after the shipping of this game, along with the total closing of their Derby studio.
That being said, you can expect support to be minimal, but more likely non-existent in terms of future patches.
Be smart and play the waiting game with this one.
In the meantime...if you really need a fix for your AvP cravings, the original AvP (selling for $5 on Steam) is an overall better product. Even better, grab AvP2, as Monolith did an outstanding job on that game...which is still the best Aliens game produced to this date.