I purchased my 301a off of ebay from a seller who specializes in refurbishing and selling vintage sewing machines. (McCarthy Vintage Sewing Machines)
She had a lot of sales and excellent feedback. I paid what I consider a fair price, but not a "deal". ($149.00 = S&H $25)
However, she packed it perfectly and when I got my baby out and set her up she has been wonderful absolutely no problems. She had already been serviced and was ready to sew.
When I am ready to buy again it most likely be through Kate.
Deb