All the necessary equipment is already included when you purchase a Schärffix on our website. Sometimes, people who own an older version buy spare blades or additional equipment (to upgrade to the current version) as well, but you do not need these with a new one and there are already 10 spare blades included when you buy the Schärffix. if you live farther abroad, it might make sense to include an additional set of spare blades already, but in general, the 10 spare blades included should last you quite some time.