An Etymological Dictionary of the German Language/Ware
Ware, f., ‘goods, merchandise,’ from the equiv. late MidHG. war, f.; a LG. word, corresponding to the equiv. Du. waar, AS. waru, E. ware, OIc. vara, f. Goth. *warô (but not *wazô) must be assumed; if the latter meant lit. ‘valuable article,’ wert Teut. wer-þo-) might be regarded as cognate.