I made a neat collection of shocklands. I'll never need a dual again for most decks.
Got, so far, counting both Ravnica blocks, 6 Breeding Pools, 2 Blood Crypts, 4 Stomping Ground, 4 Godless Shrine, 4 Overgrown Tomb and 2 Steam Vents. Not bad.
I also bought a box of Planar Chaos that I found for 70 bucks. Outrageous luck there too - 2 Urborg, 2 Damnation, 3 red Akroma and 2 Extirpate. The rares basically paid for the whole box, and then some.