Gross Margin Percentage Method    
Best Model   Budget Model  
Units     Units    
Parts     Parts    
U+P     U+P    
Tax   Tax  
U+P+T     U+P+T    
Included Services     Included Services    
Labor Labor  
U+P+T+IS+L COGS   U+P+T+IS+L COGS  
Desired Margin   Desired Margin  
Selling Price     Selling Price    
Commission   Commission  
SP after Comm     SP after Comm    
Buydown Rate   Buydown Rate  
Final Selling Price     Final Selling Price    
                 
Gross Profit Dollar Difference        
                 
Gross Profit Per Man or Crew Hr/Day    
Best Model   Budget Model  
Units     Units    
Parts     Parts    
U+P     U+P    
Tax   Tax  
U+P+T     U+P+T    
Included Services     Included Services    
Labor Labor  
U+P+T+IS+L COGS   U+P+T+IS+L COGS  
GP $ Requirement hour or day GP $ Requirement hour or day  
Selling Price     Selling Price    
Commission   Commission  
           
Buydown Rate   Buydown Rate  
Selling Price     Selling Price    
 
 
In this model the units of labor EQUAL the number of GP$'s multiplied by the cost of GP per unit.  
 
 
 
 
 
  Labor              
  x =      
  GP Units              
  x =      
                 
Selling Price = COGS + GP$'s +Commission + B/D rate