It's too late to import a 2008, now you'll have to go for a 2009. A 2009 is going for $3800 on ebay.
250cc x $5.25 = $1312.5 custom duty.
Shipping will be around $1500-2000 depending on which port you send it from.
So total breakup = $3800 + $1312 + $2000 = $7112
Which more or less comes out to around Rs. 618'000/-
There will be additional charges as well including sales tax, income tax & F.E.D.