Evolve ,is a 8 thread. I paid 1600. + something From e - bay. Nothing extra. At the time I could of brought from dealer, maybe came away with 6 pcs foot package. For 1700. A lot of money,but every time I use it,I say what a great machine! And I haven't even touched the possibilities of what it can do. The extra work books area really helpful. This was my first serger,and I never used one before. There are some newer models of the evolve,check their website out. You didn't mention condition, feet are very expensive. And to my surprise,the value on e-bay for mine is still what I paid. Sometimes a little less, sometimes more. There are two older models the never one has the wave stitch. Then the newest one has some extra features,with the air.