As poster above said , we have a policy in Pakistan that if you register a car that is not invoiced on your name you have to pay an additional tax , I think its 4% of car value (for easy estimation just double the cost of normal registration).
So to avoid that tax your brother books a car in his name and registers it in his name , and later you transfer it to your name by paying a transfer fee probably like 20-25k
And the 1 lac thing, they are just trying to move investor stock and get their commission, since they have alot.. they will have plenty more when the price increases