Scenario 1
Up to last week Bolly was being sold at $200 a case. You saw it but still had some in the fridge so let it pass.
Last weekend you drunk what was left
This week you see it being sold at $600 a case. Do you buy it or do you think it a bit expensive and go without?
Assuming you go without, what do you do when you see it next week for $250???

Scenario 2
Up to last week Bolly was being sold at $600 a case. You saw it but still had some in the fridge so let it pass.
Last weekend you drunk what was left
This week you see it being sold for $50 but dont have any money
What do you do when you see it next week for $600 again???