For the price, these are still a good value--but not if you like a juicy dark red marker.I tried these markers out on my white board and out of 12 markers, only 3 of them were a bright red. The rest were an extremely pale pink/peach color. I tried shaking one since that's supposed to help with the flow and that somewhat worked with one - the color was now brighter - but with the next one I tried, when I opened the cap after lightly shaking, it started dripping everywhere and even stained the fabric on my chair! Really upsetting. I don't think I'll be trying to get the others to work. Very disappointing.I’m a camera assistant on film sets and only use these to mark the slate. They’re bold, write clearly with no faintness, glide smoothly on the board, and go great with the erase caps by KleenSlate. I keep a few spares in my AC kit.Love themBE CAREFUL! The description is misleading. The charge is NOT for a box of a dozen as it says, but for a single marker. I thought I'd found an amazing deal, but ended up having to have my purchase money refunded when I got ten markers instead of the ten dozen this page and my purchase order indicated that I had bought.I expected a lower quality material and planned to deal with the additional work necessary to clean up another "Dry Erase" Marker. I have been exceptionally well pleased with ease or use, color, consistancy. Time will tell about life of product but the price was really great in any case.Much better than any brand name i have tried. A dry erase marker normally lasts a week with heavy use. We are still using the first one from this box. The markers leave a little more residue behind, but it comes off easily with a damp paper towel.Excellent aid for students, one of many.Estos marcadores jamas me han quedado mal, de hecho tengo uno por ahi de color verde que tengo desde hace 5 años y sigue pintandoPor el precio están muy bien, pero le escatiman mucho en el pigmento, el tinte es muy poco negro. Vamos a ver si duran suficiente.