^All the pictures show up for me in Firefox. It does look like a nice, clean example of a 4.8is. Problem most 4.8is buyers have is that it's at a dealer, and one that has questionable reviews. Again, I don't know them from Adam so they could be completely unwarranted. It just doesn't look great to a potential buyer of a 4.8 in particular. No "warm and fuzzies" if you will.
Couple that with the various parts/systems that like to see failures around the 132,000 listed mileage, and you get a 4.8 that sits around on the lot. That's just the current situation of the 4.8 market. 4.4's and 3.0's sell all day long at "buy here, pay here" lots because the buyers don't have options. They then get repo'd when the failures start to overwhelm the owner and they stop paying on the truck.