I found a Singer 221k sewing machine at a garage sale for $10 that I ended up selling on ebay for $350. I have told people of this and I hear a few stories about people who do this for a living. I heard a story where one guy would hit up used book stores and take all the first editions and make thousands a month. I have listed the Singer 221k as the 1st item on the list can anyone list more items to look out for that are hot!!! Things I could specifically look for at used stuff stores. It doesn't have to be a huge markup but at least a 5x. Thanks !!!