I have a Janome for around the same price, bought it over ten years ago, wonderful machine.
I do use a walking foot on it and very happy to use it. You don't have to buy special Janome walking foot.
Go to any sears store and look for Kenmore Sewing machine attachments. There is a little box with a walking foot and a few other feet in it.
For only around $ 19.95. Kenmore is related to Janome, it will fit. I use the walking foot on my Janome and on my daughters Kenmore.
I use the foot when quilting on putting binding on.
Hope this will help, it's also not a biggie to attach the foot.