What exactly is the purpose of the Money Symbol feature?
Money symbols present cash values or progressive multipliers like 2x or 10x. When six or more appear, they initiate the Hold & Spin bonus. Those symbols lock, and you receive three respins. Hitting new money symbols refreshes the respin count. At the end, all cash values are added together and then multiplied by any gathered multiplier symbols. It’s a distinct bonus from the free spins.