I found and bought a 503A today at a shop on the way home from a college vuisit with younger DD. $66 plus tax but no cams with it, only 1 bobbin and a couple of feet. I did, however, also get a manual plus a boatload of papers with the machine. It also came with the power cord. At the same shop I also picked up 2 long rectangular metal containers filled with vintage sewing machine parts with lots of screws. Hoping some of those screws are for Singers since those seem to find me and follow me home. Left a beautiful 66 Redeye there in a fabulous cabinet. If I'd had the money, wouldn't have given a fig about what DH would've said but didn't have the money.