I think the decision to repair, or replace the glass is a decision based on the model bus. My XL glass, bought at the special pricing costs $118 and requires about 1/2 hour to install. Having the glass repair guy fix a chip is $50 so I will be less likely to get a repair for a chip. If I had an XLII or the H3 with larger windows I would be repairing the chips for as long as the windshield holds together. The dollars involved make the decision an easy one.