Question: "I have a convertible hood on my car and I have a leak, how much will a new roof cost me?"
Answer: I wouldn't jump to conclusions, it is very rare for cabriolet roofs to need replacing because they leak. Underneath the fabric which you see is a rubber membrane and these are usually very hard-wearing. Unless your car is very old, it is unlikely to need a new one. It's far more likely that drainage holes are blocked or the rubbers that that seal around the windscreen and doors require some attention. Often a good clean is enough to stop the leaks, otherwise replacement rubbers, which are far cheaper than a new roof.