The term 'CHEAP WAY TO BUY' can be summarized by the crossword solution 'BULK', which is a four letter word. BULK buying is a way to purchase items in large quantities at a discounted price, making it a cheaper way to buy. This is often done with food items, such as buying a large bag of rice or a case of canned goods. BULK buying can also be done with other items, such as clothing, electronics, and even furniture.