1 Some new models include an automatic garage door opener; if not, an opener can add $130-$300 to the total price. 2  Additional key-chain-sized or programmable transmitters might be another $15-$50 each. 3  ThisOldHouse.com provides a photo gallery of ideas for out-of-the-ordinary garage doors. Models with these options tend to be in the higher end of the price ranges. 2  Installing a garage door is considered a medium-difficult do-it-yourself project for a two-person team, at an average cost of $300-$500, depending on the type of door chosen.