amazon.com subscribe and save is unfair Internet

I have a similar experience with a Subscribe and Save item, although the price did not increase by 10 times. I cancelled that subscription. I have one other item and the price has kept steady. However, I still think that amazon.com is wrong to do this. They say the S&S price fluctuates depending on when it is ordered, but I haven't seen the price change at all for the item. In my opinion it is a bait and switch. There is no advantage to subscribing if the price goes up and costs more than if you got it through a local store or vendor.