I personally grew up on Smarties and still steal a few from the kids when they have them. I was interested to see that they released Smarties Sweet & Sour Gummies. The Smarties website claims that the gummies are sweet, sour, fruity and creamy. If they taste as good as the traditional Smarties and are gummy I'm sure they're great!
The Smarties Sweet & Sour Gummies come in 1oz packages and sell for around $0.50 each. A case of 24 rolls can be purchased for $9.65 at the Smarties Store.