Is there one card you regret NOT buying?

[Russ S.]

Jake Arrieta Superfractor

Couldn't deal with the douchbag seller. We all know him.
He later listed it, and it sold either offline or BIN/BO, can't remember, and it's in a great collection now. Congrats Bobby.

 

[djrulz]

This card:

Didn't have the money at the time

 

[LaneyB]

Griffey's 2004 APOH 500 auto - it was in an ebay store for a long time with a BIN/BO of 1100.