Totally understand. Currently I am selling digital abstract designs so not photography. So while colors are still important it’s a bit different then photographs. Obviously part of the photography process is retouching in Photoshop and all your hard work can go down the drain if someone went and printed your work incorrectly. So printing yourself is obviously the way to go for photography.
If something is a HUGE seller for you and it is not evergreen, then for sure it is worth updating frequently yourself or by hiring a Virtual Assistant to help. I am not saying you should make everything evergreen or not, just that if you want to keep it truly passive it is best to pick something that is going to stay “in fashion” for quite a while.
There is an overwhelming amount of items you can download on this website so it might be a good idea if you have an idea of what you are looking for so you can type it in the search button. I typed in Christmas for my most recent search. There are a ton of botanicals if you want to do a gallery wall of botanicals too…I know that is popular right now)