Do not let a salesperson pressure you into purchasing solar panels. A solar energy system is an important investment and you should take the time to compare your different options. If a vendor feels the need to pressure you, they might not be confident about the quality of their products.
This light is one of my chunkier and brighter solar garden lights, so I was a bit disappointed when it stopped working. This video is how I traced down the fault …
Be realistic about the costs of having a solar energy system. If you're paying much less than other systems that are around the same size as yours, you may have poor equipment or installation work. Like with many things in life you get what you pay for. Quality installation work and equipment isn't going to be cheap. You may have substantial savings by going with a large company, but other companies may be cutting corners to keep costs down.
Solar energy is not a good option for everyone but you should still consider it. Truthfully, millions use it to save money on power bills. Find a company local to your region that provides help with solar power so you can get help when you require it.