On a whim, I searched for "Doctor Who", found the third and fourth (David Tennant) series available to ship, and snagged both for $62.00 after applying the 25% off code 25OFF40SS, which gave me a better discount than the Buy 1 Get 1 50% off promo.
That's a pretty sweet deal considering Series 3 goes for ~$100 on Amazon Marketplace. I just really, really hope/pray they arrive in good condition...
I guess they weren't the same price, because it should have been the same discount, lol.
But yeah, the 25OFF40SS is ending in a few hours, so if you can't find similar price items, might be a good time to utilize the other sale as long as you can find $40 worth of stuff.