~$100 isnt unreasonable for these kinds of things. especially since they are 20-30 year old parts (mk1 caddy were produced in EU up to 1992)
there have been attempts in the past to get things from S. Africa but enough parts changed during the citi-golf era that many things are not compatible anymore
where its possible the chassis is 95% identical, everything else under the hood etc could have been redesigned and upgraded with newer later model parts
and many were, such as the dashboard and engines were refitted with newer styles.
including the fact it was a LHD, opposite driver side and road to USA.
then there is the DIY: 3d printing your own plastic parts, restoration repairs, or modding something to replace the original.
for $100 you could have had the rheostat rewired on your original, example.