domain Online-Erfolg . com domain name Please help valuate

[rumevic]

Hi,
Online-Erfolg . com
It means "online-success" in German
Please share your opinion as for value and offer I could send to buyer.
Interested buyer from Germany contacted me recently.
Thank you!

 

[abstractdomainer]

The hyhen may be a killer and given the erfolg sales, I'd say, given the mix of 2 languages, drop this one. My reference being the other sales listed on Namebio for erfolg term.
However, I am no expert in German and look for one more opinion on this one.