I'm not getting a discount when I look up the standard version either and it says $1.29 next to Problem.
If I look up another album where I've already bought the single, it usually says "play" right next to it before I buy the album and the album will have a discounted price.
This is what Jason's album looks like this since I bought talk dirty.
The zooming tags aren't working for me so I can't get the size to show the prices.