Spindles in that size are the damnedest things to find. You can find 120-128mm length spindles on ebay for about $15.
The shorter ones I have seen for around $38. I have a few Suntour Sprints which I think are length 109. If that
works for you PM me. I will have to double check on the length. Suntour would be JIS.

Alternatively you can wait for one to show up on ebay. They come up, but not every day on ebay.