@capsat Thanks You.
unregistered invoiced cars will be out now days with lil low own-rate because of year end.
However, buying it no harm if the purchaser gets it registered before taking the delivery of the car.
Keep it parked at the dealer-shop pick it after getting the slip from excise under your name, this process will help you for a clear-chit for car docs and history of individual on the invoice. As for the car take a trust worthy friend/car dealer who deals in new/used cars and go through with the car with physical examination and its instruments/tools in the trunk, glove box car book, car keys.
Congratulation and all the best ahead.