Mail order restrictions lifted for demo gear?

Just curious about manufacturer's usual policies about forbidding mail order sales and whether demo equipment is exempt. I know most manufacturers of high-end gear limit dealers to selling locally only (although we all know they don't always follow this policy). However, on many dealer websites where used or demo gear is listed, they also mention shipping costs assumingly for purchase of this gear by non-local customers. Do manufacturers allow demo gear to be sold by mail?

Some do and some do not. Warranties often come into play here and unless the dealer honors it the manufacturer may not if it was a demo shipped through the mail.