WebNab.com is the better of the two.
But nothing really comes to mind when thinking of โweb nab.โ
It is short, easy-to-remember, and a dot com.
But there are many short, easy to remember dot coms that do not have value.
Thus, this name would need to be developed.
That potential is there.
But the name on its own has limited value.
I would say mid $xx
Good luck