Maybe it's German for BEWARE ?!!

Usuallay a B-Ware is "second class stuff", maybe as mentioned above, some that been
returned cause of buyer not lucky with the deal and used the 30 day return policy
or/and item get scratched somehow.
Or, it might as well be demo models or guarantee repaired stuff. But 100 Euro off
is not that much, would rather buy a brand new one for that small difference.

Cheers
GJ