Of course I am not medically trained and offer this support as a person with SLE.
Yes it can cost a lot for this type of treatment, and also it might not be the thing for you. If you want to get more information, look in the directory under acupuncturists and make a note of the qualifications they need to have. Look at the feedback info they have too, to get an idea of how other patients fare.
Normally you have a course of treatments that can for a lot of people be a preventative measure. Others can get great relief from their symptoms, but of course it depends on what you are presenting with. This will all be discussed with a reputable therapist before any treatment is discussed or started.
Some doctor practices even advocate complementary therapies such as this Maybe it is worth asking ?
Whatever you do, you must be sure to ask your doctor what he/she thinks and get their opinion before starting alternative treatments. It is better to be safe than sorry.