I once bought a really nice serger at a 50% discount on the last day of the International Quilt Festival in Houston.
Never could really figure out how to thread it unless I was following the video, though I did use it one time to make a jacket of vintage barkcloth with antique buttons. But eventually, through divorce, moves, updating equipment, I lost the ability to watch video cassettes. It has became the most expensive paper weight I've ever owned.
Jan in VA