Meaning your best purchase of the year, in terms of cost or sentimental value?
My runner up would be a Amazing Spider-Man #33 in FINE- which cost me $3...but I got this pair from someone who just wanted to liquidate a pile of books at a sale. The kicker...Ghost Rider being sold by Jehovah's Witnesses at a fund raiser a couple weeks ago...but I'm pretty much certain these ladies never looked at the inner pages.
This pair cost me $5 each...I rebagged them but after looking through them, I'd say one's a 9.0-9.2 and the other around 7.5. Spent $150 in all for 38 books (8 were free)