Does it change anything?
Absolutely. If I were looking at buying these that would stop me because it looks like you have something to hide. It is fine to use stock photos
as a stock photo, but this one makes it look like you are trying to pass off a stock photo as the actual items. If you can provide photos of the real cables, why not the real grabbers? This kind of thing is a massive red flag to buyers.
Instead of the photoshop I think you would be far better to just post those as a separate un-retouched image. It's not like Ebay restrict you to one! At minimum, mention in the text that the grabbers are a pasted from a stock one (ideally with a convincing reason why).
What exactly are you asking?
I nearly didn't, but figured they might be one reason why this isn't selling for you. 'SOK, I'm not charging a consultancy fee on this.