I am sure I have scored some great deals over the years and probably the road tests and contest winnings I've had on element14 would rank as the best deals I ever had.
I am asking this question because I am sure the answers will trigger some great memories of deals I found along the way.
I do remember one one auction I went to where I got a box of fifteen brand new 9V transformers for about $20. These things were perfect for 5 to 12 V linear power supplies. They were big - about 15 amp outputs and they were so heavy I had to sell half of them to the guys I was bidding against, just so I could carry the rest in my back-pack. But it also meant I got all I could carry almost for free.
Those flea markets and Ham fests and electronics auctions seem to have disappeared from this area.
If you have a picture of your great deal, all the better...