These are just cheap Chinese panels. You do realize that to get stable electricity working you need a shitload of other expensive stuff? Batteries and all the controlling electronics etc. Solar power is not cheap, it's one of the most expensive ways to get electricity at the moment actually. People that go for it are mostly interested in being "off the grid", doing a fun tech project, and trying to be eco-friendly. No one in their right mind switch to solar power to save on electricity bills, cause solar is way more expensive than other sources in most parts of the world.