You are absolutely right that the long-term cost should be compared. My investment horizon is 10+ years and I aim for a portfolio covering the world market. I apologize that I did not mention this in my initial post. I decided for Degiro, as I don’t think that my investment reaches 100k soon. I know that the actual break-even is lower due to withholding tax reason.
I updated my calculation for 1, 5 and 10 years and included VEVE and VHVE as well. Those look attractive, but especially the latter has a very low fund size (24M CHF).
Remark: A onetime purchase of 10k is probably not a realistic scenario.