Premier people get different discounts. He evidently gets a pretty good one. I get 25% off accessories so it shows less then the normal price. When I added my wife's phone it should $99 dollars, I decided not to use her upgrade, however when I looked to see if the free charging plates were still there this morning and added my wife's as an upgrade it should $199. I did read some other people where having issues with the price.
The system could just be having issues. A CSR may be able to help you.