My machine came with one bobbin and one foot. I have the chance to buy "accessories" that include 3-4 feet, a bobbin and some things I have no idea what they are. They also come with 30 pattern cams that I think will fit my machine. I don't use decorative stitches (but I might one day or might sell the machine) but I'm thinking it might be worth it anyway. It'll be about $20 delivered. Good deal? Anyone know what this other stuff is?