It just depends I think on how much she likes to sew with that machine. If she has used other machines in the past but still likes this one then buy the attachments. I know a 400 dollar machiine sounds like a lot of money but if you do not like sewing with it then you have spent it for nothing. Ask her how she feels about the machine....take to to "test drive" others and see. Most machines last a life time if taken care of.
On the cheap side...feet would cost much less than a new 400 dollar machine. What you put into it would be an investment. I think either way...go with what she would like.
