Gardena sliding glass door repair can cost around $270 to $400 depending on the damage. If you are thinking that it is way too high for a remedy, then you might want to know that the price of replacement is around $91 to $739 or maybe even more. Replacement is not always a solution, especially if the damages are on the parts of your door that can be fixed or replaced. The cost to hire a handyman to fix your door plays around $70 to $250 depending on the difficulty of the repair, your location, and the schedule of repair. They may charge an additional fee for the travel transportation. Sliding glass door repairs in Gardena are usually done on the rollers and tracks of a sliding glass door. If your roller assembly is the problem, it could easily be repaired by replacing it. A roller assembly can be purchased at your local door and window shop that sell materials and parts. It can cost you around $10 to $50 depending on the size and model.