High end sergers are still kind of rare to buy second-hand. This one also does coverstitch. And I would not be surprised to find out this one still has a high trade in value at a sewing machine shop. . .wait what did I just say? I am an idiot always having to read things to know them. (How does Miriam say it, "bang head here"? In my friends groups the same idea is "/headdesk".) So THAT is why people bid and buy on the fresh new electronic machines. A starting bid is a small gamble but it might be worth more as a trade-in against the cost of a better machine the person likes!