According to the information I know, the price of family photography service varies with the region, photography hall, number of photos, service content and other factors. Generally speaking, the price of taking a group of family photos ranges from several hundred yuan to several thousand yuan.

In some areas of China, 399 yuan for a group of 10 family photos may be a common price. However, in other areas or higher-grade photo galleries, this price may be considered as low. Therefore, you can judge whether this price is appropriate according to the local consumption level and the service level of the photography studio.

Most importantly, you should communicate with the photography studio and learn about their service content, number of photos, post-production and other details. After confirming the service content and price, if you think this price is in line with the market level and the service quality of the photography studio, then this price is reasonable.