Selling prints

Hi there. This might be off-topic for this group, and if so I apologize, but
I've received good help here before with large format questions and am
hoping to get similar good advice in this area...and as some of these prints
are large format, from large format cameras, I'm sort of relevant!

I have some questions concerning selling prints. I've started doing this
with some modest success, at local shows in Toronto, and have been asked a
few questions for which I have no answers!

1. What are folks opinions about numbering prints? It comes up frequently,
so it seems to be of interest to potential buyers.
2. If you are doing a numbered set, what do you see as a reasonable number -
20-30 comes to mind, but I really don't have any idea how to go about this.
3. Do you find folks price less for giclée as opposed to traditional
printing methods?
4. Are you using any specific factor - beyond the cost of materials - to
determine the difference between unframed and framed versions?

I'd appreciate any opinions, experiences you can provide.

Thanks!
Chris Hutcheson
Chrishutcheson.com