As I've said elsewhere, one of the worst bike buying decisions I made was when I purchased a 400/4 at night. It looked great under street lamps. The following morning I realised it was a rusty bucket of s***e. I was young and didn't know better.
However, it was the purchase of another 400/4 that led to my best haul of added spares. The bloke selling the bike said "It's £100 for the bike or £125 for the bike and all my spares". I mulled it over and agreed to pay £125. It took three car trips to get all the spares back to my garage.
GC