I was speaking to a owner of an auto shop, and he said that most people that come to them for damage to their windshield just want to get the entire thing replaced. The owner must watch a lot of shark tank (he even mentioned it) he wanted 20% per invoice that I did. Considering this would be my first contract I don't think that would really be a bad deal. However, he kept saying "why would I tell them to get a repair and make 15% (which is what I initially negotiated for) when I could make $60 off a windshield replacement? I told him about breaking the factory seal, and the environmental impact, but he was strictly looking at it from a monetary perspective. How do I defend against this? I told him "well if I was a customer and I found out that it could have been repaired instead of paying for a new windshield, rather than just doing a $50 repair I would be quite upset." He kept saying "they love how clear a new windshield is." I thought that was really a dumb response, because all you have to do is a thorough cleaning of the glass and it would be clear again unless there were chips. He was just really steam rolling all of my rebuttals, and not listening to anything I was saying, or wanting to hear anything. Anyways, I want some things verified.
When a customer gets their windshield replaced does it raise their rate?
Also, when a customer gets their windshield replaced do they have to pay the deductible?
In general what are all of the benefits to doing a repair rather than a replacement? Both monetary benefits and non monetary benefits.
In the end I walked out with a 20% per invoice at his shop and said, "well I'm going to go around to the other shops and see what the other 'sharks' will offer

" His shop literally has three other auto shops that are right next to each other. If I can get all of the others to agree to a 10-15% per invoice I think I would have some negotiating power.
I didn't intend on making a deal, but I was getting my oil changed and started to inquiry about it.
Another side-note, his volume didn't look that impressive. He may be doing 40 - 60 cars a day MAX. So I would need to contract those neighboring businesses to really make it worth not seeking out another location.