Amazon offers 12 Used TaylorMade Project (a) Golf Balls for $9.40. Clip the 20% off coupon on the product page to drop the price to $7.52. Plus, Prime members bag free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $7.24.) That's the lowest total price we could find by $9. These balls are AAAA-rated.