 Turner originally estimated that TNT would be offered to cable systems at a monthly rate of 10¢ per subscriber at launch (increasing to 20¢ per subscriber per month by March 1989), with 10 minutes of advertising being carried each hour (three to four minutes of which would be given to prospective cable systems for local advertising).Turner Broadcasting struggled to obtain carriage commitments from various cable providers to commence with the proposed service's launch plans, putting uncertain TNT's fate.Turner also entered into preliminary discussions with NBC Inc. to purchase a 25% stake in the company, with the prospect of using NBC's financial and programming expertise to get TNT off the ground; however, such discussions terminated by January 1988 without a resolution.