Solution to cure your lower back pain

I was having lower back pain. Since I was also having overweight, It was tough for me to walk smoothly. So I started researching ways to get rid of this problem. While searching online, I came across orthotics. When I went through its purpose and usage, I felt that it would be an excellent option. So I bought it and started using it. Several days passed by, and there was no more pain on my lower back. I was very thankful to the company that manufactures this product as I was able to find a solution to my problem without seeking the help of a doctor. Can anyone please mention the actual cost of orthotics?