The product image for the Swamp map is wrong. I have added the sample images from Paizo's website so you can see exactly what you are buying (without the word SAMPLE printed across it). I checked the ISBN to make sure this wasn't a different product with the same name.
I have found this flip-mat very useful for wilderness encounters along dirt paths. It has a lot of versatility and interesting terrain features. As with all these flip-mats, the ability to temporarily mark on them is very useful.
The only complaint I have with the flip-mats in general is that they don't lie perfectly flat. This can be minimized by folding the creases before laying the mat out. Another work-around I have heard of is putting a clear plastic panel over the mat, but that seems like overkill and would be hard to carry around to games.