Hi...I have three Janomes and love them all...my favourite is my 6600P......regarding feet....whilst spending $100 on feet might sound like a great deal...I am not so sure it is.....firstly are they genuine Janome...I'm not sure I would buy generics...you will probably regret it.....also why not wait until you actually need a foot before you buy it?
I have had my machines some years now and do lots of types of sewing and found that the feet that came with it did just fine apart from the FMQ foot and only last week I bought the piping foot as I am going to re-upholster my suite....so in total I have spent about $32 in maybe 10 years....I just don't see the need to buy something that I might never use.....just my thoughts anyway !