Not very sure about that model of a Busa. However, a new one might cost you around Rs.1.6 million including everything.
Regarding the import tax, I heard that it was $100 per cc, which means $600 for a 600cc bike. And of course 90% tax is there too.
If the bike is in good condition, regardless if the model, you don't need to worry about the maintenance stuff. Just put in the fuel and drive. However, if the engine has been messed up with, then you're gonna get some sleepless nights.