There are numerous possibilities. What was the original strategy outlined in your business model?

Before even considering pricing you should understand that you need a value proposition. You also need to target a market segment with whom you are going to develop relationships. You also should be concerned about getting some engagements the experience your online service provides. Price is usually a product of all of the above understanding that price is relative to the value you offer. The more value that is perceived the more someone is willing to pay for your services.

If your service is in the Uber type category, peer to peer, you could charge for the initial session but then you will most probably lose out if a recurring sessions are booked between the trainer and customer.

To give you more options I would require a better understanding of your business and your vision. I also how and what you are offering to better understand how your target market will respond.

I could be available to discuss this next.