Actually one never get back what he invest on making his own dream 4X4 . so for 80% of the vehicles running on the road the theory you and your friend recommending is absolutely true .
but for a Collector item with having LSD , Coil Spring , Diff Lockers, ARB stuff , Winch , 31" or 33" inchers feet ,Safari Snorkel ,Body lift kit , Upgraded Motor , Upgraded Interior Seats and the list continues .....the situation get diffrent so its better to start with a low price one and start spending from the day one and than count at the end...
happy Motoring