Create Breakeven Analysis
 
cba_ribbon
 
Use this function to find the breakeven point, where outputs reach "zero". Evidently, this depends on the input involved.
 
cba1
 
The following image shows the results obtained after applying the tool.
In this case, you can see what the Price per Unit should be for the Gross Profit to reach the breakeven point.
 
cba2
 
Alternatively, you can save this data analysis and rerun it from Run Multi Goal Seeker Analysis.