Even if you do have to get the entire windshield replaced, you could still get off the hook if your insurance company will cover it. Free chip front window repair is included in a lot of policies, so check this out. Just remember that insurance providers often have stipulations about which glass company you are allowed to go with, and therefore you will probably have to use a company they suggest.
The mechanic had been overly optimistic about how little time it would take. Actually the procedure required more than 20 minutes. The repair must be done carefully because a sloppy job can cause the glass to crack. The repairer should clean the surface thoroughly and wear gloves to keep skin oil off the glass. If you do not see this happening, complain and ask to have it done properly. Then primer and resin must be applied and all air must be sucked out of the blemish.
Determining the ARV is a fairly simple process and definitely the most important. This is where you should spend most of your thinking time and efforts. One of the easiest ways to do this is to get a CMA or comparative market analysis or "comps" from your realtor. When a realtor gives you comps they show you notice I didn't say tell you what price other houses that are similar to the one you are looking at have car auto glass near me sold for in the past months.
If you are not sure where to find props in your area contact a windshield chip repair stylist or browse antique stores and auction centres for a wide selection of interesting pieces.
Have your service records available. You may not have all maintenance and service records for your vehicle, but your service station can provide you with copies. Showing prospective buyers that all recommended maintenance has been performed and your vehicle has been serviced on a regular basis will provide them with additional peace of mind. One growing benefit of vehicle history reports is that they now include service records from many dealerships, and large servicing chain stores. Be prepared for potential buyers to ask when the last oil change was, how new the tires are, and if any major maintenance (timing belt replacement is a common issue) has recently been performed.
Repairing a windshield has several benefits opposed to complete replacement. Repair is always going to be less expensive. Repairing a chip or crack also doesn't damage the watertight seal created in the factory windshield, replacing the windshield will require this seal to be broken. Secondary windshields tend to leak over time. Repairing a windshield is also much better for the environment since your windshield won't end up in a landfill somewhere.