Tabcorp's preferred option is to sign one binding agreement, but TVN may believe it can drive up the price in NSW if the Victorian agencies are signed up first. "Could they threaten to black out Victorian racing from NSW TAB agencies," one insider asked on Thursday. TVN this week struck a deal with the Queensland-based Unitab, which covers betting in the Sunshine State, Northern Territory and South Australia, to supply TAB odds and dividends. Unitab has agreed to pay TVN a percentage of the turnover generated from coverage of metropolitan racing in Sydney and that of Victoria.