the quick answer
Most online fitness coaching costs roughly $100-$300 per month. App-only template plans run about $10-$50, and premium high-touch 1:1 coaching reaches $400-$1,000+. In-person training is priced per session instead, commonly $40-$120 each. The price tracks how much real coach contact you get - pay for the support you will actually use.
Ranges are illustrative market benchmarks shown in US dollars; euro and pound markets follow a broadly similar shape, but actual prices vary by country, coach, and service level, and they change over time.