Hello. Thanks for dropping by. Solar skylights usually range in price from about $200 to over $500 depending on the product and options. There are models that come with extra high efficiency reflectors and on/of/dimmer switches that can cost much more. As for as installation, solar skylights are fairly easy to install, and a basic version can be installed by most competent DIYers in a matter of only a couple of hours. There are many contractors that also do install them, and most retailers either offer installation or can recommend an installer. The cost of installation, in that case, would depend upon the contractor. Like any other home improvement project, I recommend collecting at least 2 or 3 estimates before deciding upon a contractor.