Dentist charging for X-rays on top of checkup fee which includes X-rays

Does this sound right? Check up fee costs £58 which states on their website includes X-rays.

I had the appointment which had two X rays. When I came out of the appointment the dentist charged me £78. £58 for the check up and £10 each for two X-Rays.

Am I right to query why they are charging me extra?