This is less of a specific good and more of a trend, but middle class people are more likely to buy bulk goods. Lower classes often don’t have the means to do so (space to store it and money to buy it, or access to places that sell in bulk) and higher classes simply don’t need to, or they buy luxury items that wouldn’t be sold in bulk.
Similarly, middle class people are less likely to shop at places with high markups, such as convenience stores.
The times when people shop would also see trends, with lower and higher classes doing more shopping midday on a Tuesday and middle class working people with average 9-5 office jobs being unable to do so.
This is less of a specific good and more of a trend, but middle class people are more likely to buy bulk goods. Lower classes often don’t have the means to do so (space to store it and money to buy it, or access to places that sell in bulk) and higher classes simply don’t need to, or they buy luxury items that wouldn’t be sold in bulk.
Similarly, middle class people are less likely to shop at places with high markups, such as convenience stores.
The times when people shop would also see trends, with lower and higher classes doing more shopping midday on a Tuesday and middle class working people with average 9-5 office jobs being unable to do so.