More than that.
The camera angles to not only capture your face and the dealer, but also
the exchange of money and how ever the drug is packaged passing between
both individuals. It is very possible that any dealer, anywhere might be under
scrutiny. Either by the police or regular citizens. And today's cameras are not
as fuzzy, they are high definition. Which means pimples on your face can be
seen clearly. If nothing were to happen right away, it can happen at the time
of police choosing.
Many, not all, but most will charge you what they think you can pay. Your bet bet is to ask among your friends and business acquaintances and get a good reference. If you just pick one out of the phone book you are taking a big chance. I wish this were not so, but it is.
You should also let him/her know up front that you are concerned with keeping the bill as low as possible and that you want a full accounting of their services rendered. I'm a CPA who has seen more than I ever wanted to from attorneys screwing my clients. Good luck.