I noticed a curious phenomenon of late: covers I recognize from Christian books are popping up on different books. Most are not quite the same, with a slightly altered image, or a different pose. Some are on other Christian books, but plenty are in the secular market.
Part of this, I imagine, is because of the plethora of inexpensive stock photos available online - much cheaper than hiring a model and paying for a photo shoot. But the downside, of course, is that someone else might also buy your cover . . .
But how about:
Pearl in the Sand from River North (Moody) (2010), Redeeming Liberty from Micah House Media (2010), and Run to Me from Random House (2013) - again, saw them on Goodreads. The model has such a striking face, I couldn't miss it, even with different coloring.
What other cover duplicates have you seen?