Since I use my home address as my business address, I have no problem with a long-distance client mailing me handwritten documents. If the job isn't huge, they could be faxed to you, although faxed documents are not as clear as the original. If charging an hourly rate you will automatically get more money for difficult handwriting because it will take longer to do it than if the handwriting is clear.
I've typed from faxed documents, and I've had clients mail things to me (tapes, CDs, DVDs, and documents). I also have a local client that I get something from a few times a year that sends tapes to me by FedEx or UPS. (I will pick up locally within a certain distance from my house, but they are not that close.) I also require a minimum dollar amount for a first-time client because anything less than that isn't worth it for me.
Also, for transcription I offer clients two options for digital recordings: by the transcription hour or by the audio minute. Most choose by the transcription hour. I don't offer a per-line or per-page rate. I do have one client, though, that because of their client's requirements had to have a per page rate. I really wanted them, so I ended up agreeing to that. Turned out to be a very, very good client (one of my best), so sometimes breaking your own rules is a good idea!