I love my serger. I have had it for more than 20 yrs. It is a New Home by Janome. Until recently I have not had a problem with it at all. Last August while doing a marathon of sewing that required the serger the pin to the presser foot gave way. A friend rigged a new pin and it so far is holding firm. I may not use it that often but it sure is great for those finished seams. I would not buy a used one however because that is not a risk I would take. I would spend the money and not have to be concerned that there is a problem with it that is unfixable.