I have used Kroger's I Wireless service for several years now. I don't know what you are talking about when you say that you get 1.00 for 100 dollars you spend, instead of 20 free minutes. I have a rewards card and every time I spend 50 and over and whatever I need on my rewards points to get the next reward, I get 20 minutes free!
Helps if Minutes are About to Expire
If my unlimited plan is about to expire, and I don't have the money to renew right then, the minutes which I have earned by shopping at Kroger's usually last until I can renew my plan. It really helps.
My Child has One and Loves It
Now Kroger's has a 35.00 dollar plan with unlimited minutes, text and about 50MB. Since I have WiFi at home, that is all the data I need when I am out. The phones they have are great phones too, and my child has a phone from them as well. It is a Google phone, and he loves it!