"it's about common things to verify before buying any product or service".
Common things need to verify before buying anything such as.
1) Comparing the same products with other companies
2) Getting the feedback product or service.
3) Measuring the value of company in-terms assurance
4) Comparing the price of the product or service
5) Product features such as quality or special features and options
6) The second handed value in the market
7) Product expires time whether short or long
8) find and compare information on different product websites.