I wasn't going to comment on this one, but yes there is something inherently perfect about the original Mac (in spite of its shortcomings) and they do command a premium for an original, un-upgraded one, because more people want one than there are available examples. Some folks might luck into finding one, but locating a pristine unaltered example is getting increasingly difficult to find. (for my purposes, unaltered means matching original RAM, no recapping, etc., but still running would be a bonus).
I have a really nice original Mac, upgraded to 512k and an 800k drive (sort of a daily driver version), but would love to have another one (in original unaltered condition, working or not), so I keep my eyes open.