How much is the travel cost from Harbin to Mudanjiang (traveling with a group) appropriate?

The most popular tourist route from Harbin to Mudanjiang is a two-day tour of Jingbo Lake. On the first day, I will go to Mudanjiang, and then go to Jingbo Lake from Mudanjiang City. The tour guide will recommend a self-funded project of underground forest (140 yuan/person). I don't want to be forced to volunteer and arrive at Jingbo Lake at night. On the second day, I visited Jingbo Lake Scenic Area, the largest alpine dammed lake (Diaoshuilou Waterfall, Heishitan, Heishibi Waterfall Pavilion, Basalt Landscape, Luohong Women's Cultural Park, etc.), then I went to Mudanjiang City, visited Mudanjiang Sino-Russian Trade City, and returned to Harbin after lunch. This is the tourist route to Mudanjiang. The cost of group tour is around 200 yuan/person in peak season, including round-trip train tickets, local accommodation and Jingbo Lake scenic spot. Local coaches and insurance are still very cost-effective. I'm from Heilongjiang Beihang International Travel Service. Please contact me if you don't understand. I hope I can help you. Have a nice trip! ! !