Rim is not going to be happy about this registration. Blackberry is their TM, UNLESS! you use the domain for ...yes, you guessed it: Blackberries - the actual berry. Wisely, Blackberry.su is currently not resolving.
So, depending on usage the value can reach from potential headache to mid $xx, since i'm not sure how well the actual fruit is handled/sold in the SU.
:imho:
IB