Same here with that Tecnomodel Ferrari 365P Gianni Agnelli three seater. I wanted the white one and did not pull the trigger on time. Few days later it was gone and from that point never saw one on sale anywhere.Not today, but in life.
The Ferrari 365 P Berlinetta, the three seater car. Tecnomodel made 100 of them in White (as the real car is) in their Mythos range, plus some other 'fantasy' colours. It's not the most attractive car, or the most detailed, but it's a one off. You never see them for sale now.
All of these were there one day, then basically gone the next. I think I was quite new to collecting or had a load of other models I wanted. I had the chance to buy all of them and didn't