Restylane comes in cc's or mls (milliliters). The sizes are 0.5, 1.0, or 2.0. You do save a little money with the larger syringes if you need that much.
Restylane comes from the distributer in 0.5. 1 and 2 cc(or ml) syringes. However, some doctors, especially dermatologists who use a lot of this and combine products, use smaller syringes that they fill themselves. Therefore, when talking cost don't talk per syringe but per XXXXsize syringe.