FW are perfect but not always available cheap. my first backup portable is a Janome 3180 that I purchased at Hancock fabrics for $99. That was all i could afford at the time. Hancocks puts them on sale regularly, I've seen it as low as $89. Good Luck.
By the way mine has fallen off a snack a few times, the only injury was the spool holder fell off. Mine came with a 1/4" seam foot.