If you are a small shop like me, or just prefer to buy inks in smaller quantities, I highly recommend Ink In Tubes....especially for oil inks, the sealable tubes equal less waste and less ink drying out. Dave Robison at Ink In Tubes has a slick operation selling oil and rubber inks in 1/4 pound tubes. He offers pre-mixed colors, all the Pantone staples you like to mix with, metallics and fluorescents. Contact Dave for more info: email@example.com. See the Ink In Tubes ink list/order form here.