Good, but misses the point IMO. When your low-power applications require infrequent battery changes, you may never recoup the higher initial cost. Added to the fact that the alkaline batteries may hold their charge for years, where the rechargeable ones self-discharge in a month or two, non-rechargeable are better choices for things like backup batteries in electronics, emergency lights, wall clocks. Even in something like my wireless keyboard, the length of time to get a payback makes using the rechargeable problematic.

Put it in perspective: the alkaline battery is 25-30 cents. If I'm replacing that in a year in my low current draw device, what's 25 cents compared to changing and recharging the battery 10 or 15 times? My kid's game controller, of course rechargeable! Alarm clock backup, that would be silly.