If you’re in the market for Amazon Germany (amazon.de) , we got a reasonably priced Nimaso 2m spare cable for power (100W) + video and it works as expected:
NIMASO USB Type C to USB C Cable 3.1 Gen 2 2M, 100W USB: Amazon.de: Computers & Accessories
Next to that we got a 3-pack (1m+2m+3m) JSAUX cables for power (60W) and they also work as expected. Also useful for our phones and Nintendo Switch 
https://www.amazon.de/gp/product/B07Y65P4B5/ref=ppx_yo_dt_b_asin_title_o00_s02?ie=UTF8&psc=1
They might not be the cheapest you can get, but until now we’re quite happy.