Now, you can get into a 612 for about £65k - well sorted too if you’re happy with a 40k Miles and earlier years model (2005-may be2006 ish). Those V12 are virtually bullet proof and i have heard of 125k miles+ still going strong.
It also has the benefit of being a true 4-seater like the GT while the 599 isn’t and is also way pricier (£100k for a well sorted low miles RHD)
As a matter of fact I think the 612 represents such a good value today (albeit still an expensive car) that I did consider adding a one as a daily driver to my stable, as I had found a FOC car which fitted the bill direct from owner at £66k... wife dissuaded me at the last minute - wish I hadn’t listened to her