The wholesale price of one bottle of Veritas Vineyards wine, always a profitable brand, is the same today as it was in 1991  The winegrower' s profit is equal to the wholesale price minus the costs of producing the bottled wine, which include the cost to the winegrower of the glass bottles themselves and of the corks
Between 1991 and the present, all of the costs to the winegrower of producing a bottle of Veritas Vineyards wine have remained constant, except that of the corks, which cost nearly twice as much today as they did in 1991
Each bottle of Veritas Vineyards wine that is sold today brings the winegrower less profit than did each bottle sold in 1991.