It was probably discussed before, but as the forum is not realy searchable...
I own a copy of this book https://www.bookogs.com/book/442758-ubik
Every information on my copy is the same, exept for the printing date: 2019-02 on my copy, while it is 2012-07 on this entry. On Discogs, I would considere it as a variant, but here(?), I'm not sure. And if it is a variant, how did I enter it? Just by adding a second printing date?
AFAIK the guidelines don't really cover this issue, but based on previous discussions I've entered different printings separately.
Thank you for your helpful answer! I'll create a new submission! (it sound so robotic, haha, anyway I appreciate that).