How much would a shiatsu cost?

That is a good question. Depending on how long the therapist has been qualified, whether you are in a clinic, hotel, your own home or the therapists home, a posh neighbourhood or a not so posh neighbourhood... it will vary a lot... A newly qualified person may only charge £10-£15 for an hour. A more established therapist may charge £40 - £60. A high level establishment or a well-known teacher may charge £80-£100 (or the equivalent in $ of course)

The best thing to do is check out review sites to find out what other people are saying about them, for example Qype.com