Would anyone have an idea of the original sale price of a 330GTC in 1967 in U.K. or Italy?
A 330 GTC RHD was £6516 in 1965 at their launch.
There were only 22 UK cars!
The 365 GTC was £7900 in 68 with 22 UK cars which was a lot dearer than a 275 GTB/4 !
Source Maranello Guide to UK road cars
If you have just bought this car, you can get all the original order doc's and a copy of the original sales receipt plus any service records that were done at Maranello, from Tony Willis, assuming it's a UK car.