>>Who says that retailers will price items to the tenth dollar?
Common sense does. They don’t price in half or tenth cents now.
>>They will continue to price things exactly as they do now.
The whole point is that they won’t.
And seriously, are you worried about being cheated out of a nickel every time you go shopping? You think that retailers would like to get famous for that kind of slimy behavior?
Retailers should happily embrace this, because it would save them lots of cashier and accounting time.
If you don't think large retailers will play the pricing system based on 4-9 cents on a dollar...
You are living in dream world. 9 cents on a dollar is 9%, trust me, they will work the system on that.