This is the 3237th most frequent Polish word.
sprzedawcy
"Sellers" or "salespeople."
In this sentence, 'sprzedawcy' refers to the employees working in the store who assist customers.
Sprzedawcy w tym sklepie są bardzo pomocni.
The salespeople in this store are very helpful.
Here, 'sprzedawcami' (instrumental case of 'sprzedawcy') refers to individuals selling goods at the market.
Rozmawiałam z dwoma sprzedawcami na rynku.
I talked to two vendors at the market.
In this context, 'sprzedawców' (genitive plural of 'sprzedawca', meaning salespeople) is used to express that more individuals are being sought for employment.