Any idea of how much this prep would cost to open up old exterior wall and frame for new garage door . Already got a price of about $ for door and opener from Overhead door, after opened up ,framed and ready for install..On average Extension or torsion Spring changes for standard sized garage doors average between dollars. There are several types of spring systems designed to counter balance your garage door..HomeAdvisor’s Garage Door Cost Guide lists price information on installing or replacing a garage door, as reported by HomeAdvisor customers..Learn all about install or replacing garage door costs. Read general garage prices, tips and get free garage estimates. CostOwl.com.