My thoughts:
When you add in shipping, it is $19 for 50 standard/100 HE loads. I am pretty sure you can find cheaper detergents locally and then you also don't have to worry about ordering more when you run out.
The ingredients are basically oxygen bleach powder/oxyclean main ingredients, borax, and a surfactant (soap/detergent part) ingredient derived from coconut. These are all fine ingredients for most people, it looks similar to Country Save powder if I recall those ingredients correctly. Personally I prefer a detergent that contains enzymes because I have found that those work better for me.
Hope that helps