i take exception to that. i had 5 or 10 on my windshield. it was done professionally. they will usually only take cash because it is illegal. i paid 100 for mine to get done when they did the rest of the windows. i live in vegas so cars get exceptionally hot on the inside and since it doesn't fit in the garage it seemed like a good idea. the only thing i didn't like about it was i put a small amount of glare in the windshield when driving at night. not enough to not do it but you notice it. you also get use to it.
i will be getting my new one done soon.