They are both the same thing. Solar panels is just another name for PV or photovoltaic panels.
As for the price, you have to do research in your local area, as prices differ all over the world. Solar panels are getting cheaper every year, with the price for large quantities in July 2012 at less than US$0.70 per watt.
An installation of solar panels.
Devices that use photovoltaic panels are solar panels, and power plants. They convert the suns solar energy into direct current electricity. These panels are typically made out of silicon.
The best performing electric solar panels are probably the most expensive ones. Unisolar brand seems to be the cheapest while Photovoltaic is in the middle range. Perhaps Sharp are the best.
Photovoltaic modules
Photovoltaic (solar) panels.
Are Solar panels that convert light energy into electrical energy
Photovoltaicm, Solar cell, Photovoltaic modules
The solar panels on my roof are made up of several rows of photovoltaic cells.
Photovoltaic panels on the roof can harvest electricity.
photovoltaic
Solar panels are panels comprising large numbers of photovoltaic cells which convert light energy - in the form of incident sunlight - into electricity.
No. Solar panels (photovoltaic, PV) produce electricity from the sun. This electricity can be used to cool your house - or heat your house.