Got five from the dump for next to nothing. I got two good working ones out of it. A GMC that just needed a new kill switch, and a Homelite that was the exact same engine as a Ryobi that had some parts missing but had all the bits needed to get the straight shaft Homelite going (and thanks to the guys here that helped with tuning advice). Total cost for two working trimmers, under $20. I'm on the look out for a metal cup and nut to convert the Homelite to a brushcutter blade next.