model, a shop purchasing $10,000 a month in part sales yields an average of $3,000 to $3,500 in GPM dollars. How can you be sure you are maintaining your GPM on parts? The answer is a Parts Pricing Matrix. A Parts Pricing Matrix gives you the ability to charge correctly 11 reviews of Matrix Auto Glass "Charlie at Matrix Auto Glass is amazing. He fixed my windshield free of charge. Fast service and friendly staff. I will recommend Charlie to all my friends and family. The founders of Auto Repair Compare have been in the automotive repair business for decades, owning and operating their own shops. In 2011, they created a customer-friendly, data-driven auto repair quoting program for shops that easily integrates into an online shopping tool, allowing shops to provide instant, accurate repair quotes and ... Matrix has partnered with Mitchell to integrate its database into Matrix's Repair Software. Automechanika Chicago, the largest U.S. trade show dedicated to high-end technical and management-related training for automotive collision and service repair shops.