Lets see.
1990 240sx
Bought:$1k
Invested:$ jack shit, and runs like a champ
2006 R1
bought: who the F cares, it’s a money pit
1976 280z
Bought$ 200 bucks ( shitty eBay listing 
)
Invested : $200 for sheet metal
Up on bricks
1996 lumina with 63k on the od
Bought $1300
Invested $600 (DIY head gaskets + engine rebuild kit)
Sold $2k
Loss $ 1,500 ( The kid died, only gave me $500, didnt bother his family for it)
Previous to this, I was banking hardcore buying cars from auctions and listing them in the papers the next day, but I didnt drive those.