Why do I care?

So, I was looking on eBay today for a graphing calculator like mine for my friend who needs one. She borrowed mine from me to use for a math class she was taking, and since she has more to take, she wants to go ahead and get one of her own. (I am very attached to my calculator and really couldn't live without it much longer.)
Anyhow, in my search for one of these calculators, I came across a listing for the calculator I was looking for, but the photo provided did not look like the actual model listed and it wasn't clear enough to read the model number on the calculator. So, I asked the seller what was up with that, but did not get any response. Of course, I didn't figure I would get an answer if this guy really is trying pull a fast one.
When I first found this listing, the high bid was only about $6, so I figured if someone was going to get screwed out of their money, at least they won't have lost much. But when I was checking to see if the seller had answered my question yet, I noticed that the bids were up above $20 already. So, I contacted the high bidder to let her know about the situation. I really hope that she doesn't get taken advantage of here.
Of course, none of this has anything to do with me. I am neither the seller, nor the buyer. I won't be affected at all however this turns out. So why do I care? Maybe it's because I hate dishonesty so much. I don't know, but now that I've vented a bit, I feel a little bit better.