Cheap
Whoa, just went to safeway. How I walked out with 150g of baby spinach and 1 litre of happy planet for $7 after tax. Now I normally don't buy from large conglomorates (their buying power doesn't help consumers or society, it just allows them to extract larger rents from the population with their relative monopoly power) but to get either of these anywhere else would have cost me more than buying both. Which is hyper cool. Not only am I probably buying something that would otherwise be thrown away (why else would they be selling below cost?) but I also get yummy foods for cheap.
Yay.