I know one dealer who lives 100km away from me, semi-retired, very old-school. Doesn't even use a computer. No e-mails, no internet. Still types out his sale list on a manual typewriter and snail-mails it out to his customers. And we're not talking just a couple of pages, it's usually a 30-page book. His wife has a computer, but she only uses it to maintain the mailing list.
My main problem with mailing-list dealers is, I buy coins when I have the spare money. Those times do not necessarily coincide with the times the catalogue arrives in the mail.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis