The best deal on soda I've ever seen is happening right now at CVS (1/9-1/15)! Buy 6 12-packs for $20, and get $10 ECB! This deal is also good next week, so even if you started with nothing, you could do it once this week, use the $10 towards doing it again next week, and end up with another $10 back! Net cost is $20 + tax for twelve 12-packs! That's $1.67 apiece, and the best deal I've seen on soda since I started paying attention.
If you're a caffeine addict like me, this is a pretty good deal!