You can get clip marks when revved high enough, but never any amount other than a slight mark, can have them pocketed if thinking ahead you may want hairier cam, ie BD14/15.
Shop around a LOT for prices though, one place I asked wanted £9 + vat PER cut, ie £169.20p, wasn't going to use him just wanted quote, my regular guy did them for £40 everything inc vat, but he is a tad slow at times!!
tabetha