I have four big ones...
1. Buying a NIB SafeCracker for $1500, from dealership, and then letting it go for $2k.
2. Buying NIB Sample CV for $2k, and letting it go.
3. Buying another Sample CV, and then selling it for under $3k.
4. Passing up on I've eof Ted's *04959¢ (NOT sample) TZs.
5. Passing up on a NIB Cactus Canyon from dealership for under $3k.
Okay FIVE. Five regrets.