This is the 17268th most frequent Polish word.
zakupowym
"Zakupowym" means "shopping" or "related to shopping."
Here, "zakupowym" is an adjective form of "zakupy" (shopping), describing the spree related to shopping.
Spędziłam dzień na zakupowym szaleństwie w centrum handlowym.
I spent the day on a shopping spree at the mall.
In this case, "zakupowy" modifies "koszyk" (basket), indicating its relation to shopping.
Mój koszyk zakupowy był pełny zdrowej żywności.
My shopping basket was full of healthy food.
Here, "zakupowy" refers to the weekend plan relating to shopping, showing the adjective use to specify purpose.