[perlgeek]

I don't think you need bugs for that:

1. You (as a product owner/manager) want to convert people to "pro" users so you try to show them all the money they can save by doing so.

2. You don't care about the the experience of the non-pro users, because that's not the metric you're optimizing, so you never specify to developers what should happen when lower-class users shop, except that at the end they have to pay the full price

3. Developers build something that works like the dark pattern described above (they are incentivized by keeping their sprint goals, not by making non-pro users happy).