May be a bit of confusion here. In post #1440 TheMonolith said "Machine installed at my grocery store! Looks great. I got one and it was really good. Little steep at $5, but not terrible. As I got one onlookers were amused and a 10 year old girl convinced her mom to get one. Nice to see the execution!" Then in reference to a comment made by another poster about the $5, he said he wouldn't buy again - but this was because of the perceived cost, not because of anything else, as far as I can tell. TheMonolith can clarify if he/she so chooses.
When the machine was installed in Houston at Women's Hospital my wife and I went and really enjoyed the product (both yogurt and sorbet). Later took daughter and grandkids (ages 24 and 27, so not really 'kids'.) They too were very impressed and didn't think cost was out of line, in fact commented that it would still be a bargain if the volume was a little less.
If you've ever purchased a latte at Starbucks or taken the kids to the Marble Slab for ice cream, I think you'll find that $5 for a yogurt with toppings is not overly expensive.
