Rear window sun shades?

Can anyone tell me what VW is calling the pull up window shades on the back doors? I have one that the posts that hold in up in place are broken. I checked with the dealership and they told me it was an assembly and would cost almost $500. There has to be a way to fix this other than that? Does anyone have any ideas? I can’t find anything on the internet. Someone has to have a hack or a after market part for these?