Bought these for my 5 year old, he is now 6 and they have barely been worn. He is somewhat afraid of them, and we don't go a lot of places for him to utilize them (grocery store, mall, etc) He is usually home when I go shopping. If anything else, they are cute high-tops. They are easy to switch from wheel to regular shoe, but you have to actually remove the wheel, which I was not aware of initially. Not a big deal, just means if he wanted to skate at the bus stop, he would have to be responsible for taking the wheels out, inserting the plug and not losing them. I think they are a great concept and it just depends on the kid and the lifestyle.
As far as the price, they were a great bargain.