Hi SJ,
The number of needles really depends on what you're being treated for. A lot of people think that it's a value for money thing eg you should expect a lot of needles and if not you're being ripped off! But my acu guy says that it's better to use as few needles as possible, so as not to complicate the treatment. I've had up to about 12 or 14 I think, but sometimes i'll only have 6 or 8.
It's also great because since I go weekly, if I'm feeling a sore throat or cold coming on, or if I'm not sleeping well or feeling especially stressed, he'll incorporate that into the treatment too.
It is pricey, but for me I'd rather try the natural option and fix my body that way than have hormone injections (at this stage anyway). DH and I joke about our 'million dollar baby'