I've had other T's in the past who stated that if I cancel a session less than 24-hours, 48-hours, whatever, then I would be responsible for the cost. But my current T has never stated any policy regarding cancellations or missed sessions.

I am very conscientious about giving advance notice if I need to miss a session with perhaps two exceptions in the past year. In one case I cancelled the night before because I had to report for jury duty that I forgot to tell him about and other time I didn't show for a session because I couldn't face talking about my trauma. In the first case, I did not pay T for the session and in the second case I did pay. T never commented on payment for either time.

On Saturday morning I left a phone message for him telling him that I'm not coming in for my Monday afternoon appointment. I assume he won't get this until Monday morning and that it is unlikely he could rebook this time slot (although I could be wrong about both these assumptions). Do you think I should pay for this cancelled session? (Money is definitely a concern for me.)