I'm out in California this week and ran across a couple of shops here that sell FroYo self service, by weight. They have several machines, you get a cup, and dispense as much as you want of whatever flavors you want. You can add toppings, and then they weight your creation. 34 cents/ounce.
I like the idea because I can get a small portion for a couple of dollars instead of a meal sized portion for $4.50. Has anyone run across such as shop in our area? The place whose wares I sampled tonight is called White Tara, which apparently is a Buddhist thing. This shop is run by a Japanese family.