Star Trek VI: The Undiscovered Country cost approximately $30 million to make which I'm not sure what the equivalent is today. Maybe $100 million?
It adjusts to about $50 million today. Hollywood budgets escalated dramatically in the 1990s and 2000s, outpacing general economic inflation by a wide margin. A lot of 1980s and early 1990s films that were considered big budget at the time adjust to what would now be low budgets for films of their scale.
For example, the budgets for the three 1980s Indiana Jones movies adjust to about $45 million, $61 million, and $88 million respectively in today's dollars, while Kingdom of the Crystal Skull
had a budget of $185 million (which adjusts to about $197 million today).