I quit buying yogurt years ago when I discovered how easy it was to make my own. Even Greek yogurt. I made it in a quart mason jar in my counter top oven until the oven broke. I couldn't find another oven that would maintain a constant 100 degree temp. All the new ones started at 150 degrees. I bought the Salton quart yogurt maker and it works great. It was the same price as one of the new countetop ovens so I opted for the maker. I tried the thermos and crock pot but nothing worked better then that old toaster oven except this yogurt maker. To make Greek yogurt, let regular yogurt strain from cheesecloth over a bowl. The more liquid that is strained the smoother and firmer the yogurt. Let it strain all the liquid and you have a cream cheese consistency that makes great cheesecake. I use flax, almond or coconut milk instead of regular milk. Adding dry powdered milk to the liquid milk make the yogurt a firmer texture. Here is a site that explains how to make homemade yogurt without a yogurt maker.
http://www.hillbillyhousewife.com/yogurt.htm
Try it! You can add any flavorings or fruit you like and you know exactly what is in the yogurt and it's so cheap to make. Save more money for fabric.
Here is a picture of my yogurt made in the quart mason jar:
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