£70 for a legitimate massage is, in my humble opinion, too expensive
Before I start I want to be clear that I haven't seen Dina, the following is just based on information provided in other threads about her, and my experience elsewhere
The £70/hour is for a deep tissue sports massage, she also offers soft "relaxing"/medium "Swedish" massage for £50/hour. IMO this is not expensive for a professional sports massage. I occasionally use a Sports Physio who charge £60 for a 40 minute session. They are however the Physios for the local rugby and football team, England rugby, England football, half of the UK Olympic team etc. so can afford to charge pretty much whatever they want
So not having seen Dina I can't say how the quality of her sports massage measures up, but £70/hour is well within what I'd expect to pay for the best of the best