It's a cool concept, but they don't match item to item (making it hard to see which is more expensive) and then they compare dollars per pound to dollars to serving - which are not equal - that is just dumb as you can't then compare the costs!
For me, I buy half our veggies fresh and half frozen. Some things survive the freezing process relatively unscathed - collard, mustard, spinach greens, peas, corn. But some things are mush when previously frozen - brussel sprouts, broccoli, cauliflower, etc.
For fruits, we buy a lot of frozen (unsweetened) fruits for smoothies as it's usually cheaper than fresh. We'll have fresh when it's in season and cheaper. Apples we buy year round.
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Kind of a cool little chart
