In this case, I don't think cojones is the proper term. Cojones, in my experience is a compliment. Chutzpah may fit better. (In Hebrew, chutzpah is used indignantly, to describe someone who has over-stepped the boundaries of accepted behaviour for selfish reasons.)
IMHO, a picture posted on a public forum is free game unless the poster states otherwise or the website states that the pictures can not e used on other sites. Still, taking someone elses picture and selling it for profit takes chutzpah.
Just out of curiosity, I compared the picture posted by raden and the picture posted on eBay. They are identical. I suppose that it is possible the two people took the exact picture at exactly the same time. I don't know. It is also possible that the eBay seller posted the picture as a joke that got out of hand. Again, I don't know.
I have no stake in this one way or the other. I wonder if sheepeatersupply from Meridian, ID has the guts to post his real name here on the Busse forum. Now that would take cojones.