Macintosh computers were available, but expensive and not a typical home computer. And bandwidth on dial up at that time was maybe 2400 baud, way too slow to send any kind of detailed images of products that consumers would want in a catalog.
It might have gained some adoption, but in that era I think most consumers would have found filling out an order form and faxing or mailing it in easier.
Ordering systems would have been trivial to implement if the political and commercial will was there. Not too long after this you had Prodigy, Compuserve, and AOL offering these kinds of services. I remember they let you order flowers, buy software, etc from their online systems.
The web and tcp/ip internet replacing it all didn't come until much, much later. From 1983-1995 online services were ruled by non-TCP/IP dial-up BBS services and proprietary services like Prodigy. Home internet didn't take off until 1995-1996 and even then it was fairly limited.
>Apple II or Comnmodore
On top of all the PC clones running DOS and Windows (Windows 1.0 was 1985), Amigas, Macs (as you mention), Timex/Sinclair, etc.
Macs were home computers, there were just less of them. Back in those days people paid large prices for home machines, so the pricetags might seem high today but the utility/novelty factors made up for it.
At the time, a modem was the same price, if not cheaper, than a printer or a floppy disk drive. It wasn't exactly a luxury expense.