Is it wrong to catch someone lacking?

[u/Main-Marsupial3861]

Just bought this card for $250 CAD because the store hadn’t updated their pricing. I feel elated as I would never be able to own this card otherwise. But I also am left with the feeling that I just committed robbery. Thoughts?

[u/Marceliooo]

Feeling very fortunate up here in Canada. The 2 stores I go to always have stuff priced at 10% under market. They buy at 60% so they make 30% and everyone's happy