A good 300G will cost you around $25,000 at least. Getting it here is an additional $1500, on which the customs and taxes (50% depr.) will be $13 to $15k. That's an average $40K at most < 37 lac.
Ref price: Toyota Mark X DBA-GRX120(2009) / US$23,810 / 14,650 km / CARCHS Co.Ltd - Japanese Used Car [ tradecarview ]
If you hire an unknown agent to do it, he'll charge you ~10 lac extra for his own profit. It's best that you know the procedure yourself and get someone you trust (friend/relative) to import for you.