ONE WARNING!!! At least 50% of the ebay photos for the 301's listed show missing bobbin cases! And they don't tell you in the description that you will have to spend another $40-$80 to get a replacement. I have a thread about this subject right now
http://www.quiltingboard.com/t-139697-1.htm
So, before you bid, make sure the bobbin case is included and ask for a photo. Remember, these folks don't always sew and they think a bobbin is a bobbin case and have no clue..