You get more for the money with Marabu Inks. Each bottle has 20ml instead of the typical 14ml.
Create flows of color and layers of possibilities! Create stunning works of art on a variety of surfaces with vibrant and versatile alcohol inks. Use the wide range of dye-based colors on their own or blend the inks together for infinitely creative possibilities. Permanent, fast-drying, acid-free, and blendable. Bottles feature a narrow precision tip. Use on synthetic and glossy papers, ceramic, glass, metal, plastic, vinyl, leather, and more.
Read this great article about using alcohol inks with polymer clay. Click Here