Bought these for my Art in general, and they're fab. The variety of colours is great (black especially comes in handy for loads of stuff) and the thickness of them is just right, not too fat or thin. It should be noted however, that they do have quite a strong odour when used heavily, and the ink soaks through the paper a little, but they give a good quality finish to my drawings, so I can't complain.
The seller despatched them quickly and they arrived quickly, the product itself were really great nice selection of colours and they work really well, they haven't dried up. If your looking for sharpie pens in 12 different colours then buys these, these are great, a must buy if your looking to buy permanent markers.
Came 2 days after I ordered it, good quality packaging and no fuss. Well worth the money, and I know have millions of uses that I never knew I could do with a permanent marker. Seriously, if you want bright coloured pens, get them from here.