I have noticed this, even the 'live' +1 feed does show the information, however if you go onto anything else it shows the information, not exactly a good advocate for encouraging people to 'tap the app' or 'shop on line' is it!
The above post with regards to Q not wanting to show other pricing, I can see does merit some thought, but given the fact that people can watch past shows and that Q could probably go in any way and edit the information, then whilst a posibilty I am inclined to go with the others and see it as a glitch, I mean if people don't have TV's now or are watching it 'on the go' (why anyone would want to do that I have no idea, but I guess there is some), then they are not going to be able to buy, as the presenters don't always say the product information clearly or give all the information, plus if like me you are deaf, then it is sometimes difficult to understand the accents!