Installing a blower is generally a pretty big deal, so $800 doesn't seem too unreasonable. I was quoted $200 just to bolt my header on. Around here it may be hard because that probably is at least a full days work if not more, and you'd need a garage since doing it in a parking lot probably wouldn't be the best idea.

He may be better off checking some of the Honda boards and trying to find some members around the area that would be willing to do the install for him. I know most forums always have install days and friends work for alot less money then shops.