If the industry is not a black-hearted business, it probably needs 1500. It is estimated that they can earn less by taking the second order 1000. If you find a reliable programmer or source code, the source code of this management system is very cheap. After all, it is a high-frequency topic, and it can be solved in less than 1 0,000.

Most of the pricing is mainly papers. To be honest, I recommend writing it myself. After all, there are so many free libraries that you can always cheat the teacher by copying them.