In the past, when people did their grocery shopping at the corner greengrocer's, prices were clearly marked by the store manager in terms that were easy to understand, e.g., "Carrots-10¢ a pound.
A greengrocer or fruiterer is a retail trader in fruit and vegetables; that is, in green groceries.
Aubergines can be found in most greengrocers, shops and superstores.
Thank you whitegoshawk!