I'm THIS kind of cheapskate.
Clarification--I only do this on weekdays when I need to bring my caffine with me.
I've tried buying cans to just grab and go too, but the problem lies mostly when I get to work and have to run up a bagillion (OK 3, but it FEELS like a bagillion) flights of stairs to the office. I don't want to risk spilling a single drop! It is afterall my coffee (and I DESERVE it after all those stairs).
Using a local grocery store's REGULAR prices- not on-sale prices -- the math:
20 oz. single (20 oz. total) = $ .75 /oz.
6 pk. bottles (101.4 oz. total) = $ .39/oz.
12 pk. cans (144 oz. total) = $ .35/oz.
2L bottle (67.6 oz. total) = $ .26/oz.
SO... for 144 oz. of soda (the largest qty you can buy as indicated above).
When purchased as ____ you spend____.
20 oz. singles $ 10.73
6pk bottles $ 5.67
12 pk. cans $ 4.99
2 L bottles $ 3.81
Oh, and I totally stock up when they are on sale for $1 a 2L.
Yep-- I'm THAT kind of cheapskate (and nerd), and I don't care who knows it!