If fairly unique, I could see them still retaining some value as they could easily be scanned and flipped digitally for reprinting or other use. But I would think that would only apply for a scarce image that you really liked and thought you would never see again in proper form.
Otherwise, I think your primary target audience would be the budget-conscious or beginning collector who wanted a striking photo but wouldn't have been able to afford it otherwise. Unfortunately, if you're the seller, the budget-conscious collector probably is not your ideal buyer
So maybe not worthless, but definitely worth less.