A bike can sit in a shop for a couple years because it is a size no one likes, or because it didn't stack up with other bikes the shop offered for people who were shopping ... maybe most shoppers prefered to pay a little more and get a different bike, or less ...
Then after it was a year old, people looked at the new bikes first---"I want the latest" syndrome.
Plenty of great bikes sitting around in bike shops selling at discount prices but people wonder just what you did .. . "Why didn't it sell." And that's why.
A lot of riders watch every day for stuff like that---good machines which got overlooked, which can be had for a great price just because they aren't "the latest."