Would you be able to share what company quoted you for $7k? I'm going to be getting quotes on a solar installation, and your quoted price seems rather good. Do you get to reuse parts of your old installation?
Well in my case we already have the mounting equipment on the roof and wiring. And we were looking at new panels and a new grid-tie inverter, so 16 x 325W Kyocera panels was $5,600 and the SMA Sunnyboy 5Kw inverter was $1900 (total $7,500).
I would not expect a company to quote a new install for that price since they will have to add the mounting system and pay their installers for a day's labor getting everything set up.