What do you do with a washed-up bathtub? You could replace it with a new one, but that's not an easy proposition. Most tubs are set in an alcove or corner, lapped by the flooring and wall finishes to create a watertight seal and tied down in at least two places by plumbing. If you're ready for a full-scale bathroom remodel, replacing the tub makes sense. If you're not, you're looking at creating a real mess and spending $2,000 to $3,000 for little visual change. But two better options are available to price-conscious homeowners with tubs in need of a face-lift: tub liners and tub refinishing. Both add years of life to an existing tub at a fraction of the cost of full-scale replacement— and in a fraction of the time.