Why is there such a big difference in the charging standards of property fees in the same community?

If the owners' meeting has been established in the community, the property service charges will be regulated by the market, and the owners' meeting and the property company will negotiate and formulate the charging standards themselves. On the one hand, the collection standard of property management fees should be restricted by relevant national policies and regulations, and arbitrary charges should not be charged; On the other hand, the collection standard of property management fees is also limited by the income level of users and the principle of high quality and good price.