Im rating the color-gradiant version of this desk mat.
Just after the unpackaging I found a black color touch all over the mat, as if the printing wasn't properly done or the printer had a malfuction/ the color patrons were empty. The picture captured it way to extreme due to my crappy phone and the little light, but it definitifely is noticable for me when just looking on the mat in a environment with a little light, like I like to have it in my working room.
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There are some really fine scratches on some places on the mat, which leave a inconsitent feel when observing the color gradient across it. This is also really inconsistent across the mat (also visable on some of the other pictures), the following picture captured its peek in the top left corner.
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Now after a few weeks of usage, I clearly can see black on multiple points on the mat, just as if the print now was rubbed of completely. Also the mat made it to me a bit damaged, as you can see on the first picture.
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Furthermore, the mat fails to lay flat on my desk on one side and also doesn't seem to be perfectly straight on it's edges too (which many other reviews seem to mention btw, so this is definitely not a "bad luck" issue). Look at the corner of the following picture, or just observe the edges on the pictures above.
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I should note that I just posses one other desk mat called "PBTFANS SPARK R2" from KDBFans which came with my keycaps, and it serves as a reference here. Not to mention, that mat just cost me 10$, wich is 40% of the price I paid for this one.