system
Given the following post, respond as if you're commenting on Reddit:
human
Is there a term for the cost of convenience while shopping?

It's a bit of an odd question for a proper term so I'll present the story that led me to think about it.

At one store, milk is $3, but the produce is bad so I will purchase none.

At another store, milk is $4, but the produce is good so I will purchase produce there.

Is there a term for my unwillingness to go to the cheaper milk store to save $1?

Is there a term for the $1 difference in milk prices between the stores, assuming the other store knows I'm willing to pay this extra $1 to be able to purchase both milk and produce at one location?

It feels too easy an broad to call it price discrimination because my shopping preference is between two products instead of one, and that cost increase is based on my preference for produce which varies from time to time. The stores are also right next to each other which means I can't really account for travel time as a big factor.

Thanks!
gpt
Opportunity cost: the loss of potential gain from other alternatives when one alternative is chosen
(Definition taken from the Oxford English Dictionary).

In essence, opportunity cost is the value of your next best alternative activity. So, in your example, the opportunity cost of buying your $3 milk in one place and then traveling elsewhere to buy produce, includes the value of the gas, wear and tear on the car (if you're traveling by car), and time that you spend travelling to the other store for cheaper milk, in terms of how you could have spent these resources in the next best way. If this value exceeds $1, then you'll just buy your milk for $1 extra at the store you buy produce from.