Question? Should I reglaze my fiberglass bathtub or should I replace it? Replacing an existing bathtub with a new bathtub is not as easy as it sounds. The original tub almost always needs to be cut into pieces causing for extensive, and expensive labor. flooring, trim, surrounds, and plumbing will also need to be replaced. While a new tub can cost as little as $200, labor expenses for the replacement process can easily add $2,500.00 or more to the bill. Instead, many homeowners have the existing tub reglazed, which typically costs $300-$1,000, depending on area and process. Whether your bathtub is dingy and stained,...