How much does it usually cost to travel from Shenzhen to Taiwan Province Province?

My last trip from Shenzhen to Taiwan Province Province cost more than 3000 yuan. Eight-day train tour around the island, hot springs and east coast in Taiwan Province Province

Flight: take the route around the island clockwise or counterclockwise, and don't go back all the way;

Taipei round trip or Taichung round trip, the departure flight is arranged in the afternoon or evening, and the return flight is arranged in the morning or noon.

Hot Springs: Arrange to enjoy Taitung Hot Springs.

Dining: 7 breakfast (check-in buffet breakfast) 9 dinner (average standard NT$ 200 yuan), one bottle of mineral water per person per day.

Train: It is time-saving and safe to arrange trains in Hualien section of Yilan.

Shopping: Arrange 8 specialty shops (cakes, exquisite gifts, coral crafts, Kaohsiung gold diamonds, duty-free, Shao specialty, alpine tea and marble artworks).