How much do large boulders cost?

It depends on where you live and what exactly you mean by 'large'. - In western Canada you can get these for about $100 or less weighing 800-1,000 pounds. -Often the cost of delivery is higher than the cost of item. We also have in my area, at least one company that makes extremely realistic fiberglass rocks that cost more, but you can transport on the roof of your car, or in a pickup bed.