So I set about making my own version. Unfortunately mine is not cashmere (which may contribute to the $228 price tag), but plain old cotton:
I cut long 1" strips from a coordinating fabric:
and ran a gathering stitch down the middle of each strip:
I cut each strip to size, pinned in place on my cardigan, and sewed down:
Then it was time to start adding the beading. I used pearl beads of varying sizes and some smaller copper beads. This process was a bit time consuming, although not hard - just a bit tedious. But I do think the end result was worth it - this cardi may just be a new favorite!