I never used that particular machine, so I can only relate my experience when I bought an older second-hand serger. I found it difficult to use, but I assumed that was because of my lack of knowledge about sergers. So I found a beginner serger class and signed up. Even with the teacher's help I spent most of my time struggling to thread the serger, adjust the tension, get the fabric to feed evenly and the stitches to balance. After two sessions watching my fellow classmates zoom ahead of me with their projects, I went out and bought a new serger. Are you experienced with sergers? Does the machine come with lessons? Do you have spare time to fiddle with it? If not, I would be wary.