Profiting from doing the right thing

According to the Worldwatch Institute, factories around the world churned out a whopping 4-5 trillion of them in 2002. Recently, I've noticed my local ICA grocery store, in addition to selling ordinary plastic bags for 1.5 kronors each, are selling biodegradable, post-consumer material based plastic bags. Nice to see that. But, the new bags are 2 kronor. So rather than doing the right thing and just switching over to the eco friendly bag and continuing to sell them for the kronor and a half, they are still going to sell the harmful ones and sell the eco friendly ones for even more money. Sure, the environmental bags probably cost more to produce. But, given the profit (sorry, in Swedish) the Swedish grocery retailers make on the bags in general, you'd hope they'd do the right thing. One can always hope!