Marginal Discount Calculator

# Marginal Discount Calculator by Kevin L Davenport @ http://kldavenport.com

import locale
locale.setlocale(locale.LC_ALL, 'en_US')

month_prompt_text  = str("Your monthly cost is: $ ")
annual_prompt_text = str("   Your annual cost is: $ ")

def calculator(seats): 
    price = 0
    monthly_cost  = 0
    if seats <= 500:
        price = 15
        monthly_cost = seats * price
        annual_cost = monthly_cost * 12
        print month_prompt_text + locale.format("%d", monthly_cost, grouping = True) + \
              annual_prompt_text + locale.format("%d", annual_cost, grouping = True)    
    elif seats <= 750 and seats >= 501:
        price = 13.5
        monthly_cost = (7500) + (seats - 500) * price   
        annual_cost = monthly_cost * 12        
        print month_prompt_text + locale.format("%d", monthly_cost, grouping = True) + \
              annual_prompt_text + locale.format("%d", annual_cost, grouping = True)
    elif seats <= 1000 and seats >= 751:
        price = 12
        monthly_cost = (7500 + 3375) + (seats - 750) * price    
        annual_cost = monthly_cost * 12
        print month_prompt_text + locale.format("%d", monthly_cost, grouping = True) + \
              annual_prompt_text + locale.format("%d", annual_cost, grouping = True)
    elif seats <= 2000 and seats >= 1001:
        price = 11.5
        monthly_cost = (7500 + 3375 + 3000) + (seats - 1000) * price 
        annual_cost = monthly_cost * 12
        print month_prompt_text + locale.format("%d", monthly_cost, grouping = True) + \
              annual_prompt_text + locale.format("%d", annual_cost, grouping = True)
    elif seats <= 4000 and seats >= 2001:
        price = 9.75
        monthly_cost = (7500 + 3375 + 3000 + 11500) + (seats - 2000) * price
        annual_cost = monthly_cost * 12        
        print month_prompt_text + locale.format("%d", monthly_cost, grouping = True) + \
              annual_prompt_text + locale.format("%d", annual_cost, grouping = True)
    elif seats <= 6000 and seats >= 4001:
        price = 9.75
        monthly_cost = (7500 + 3375 + 3000 + 11500 + 19500) + (seats - 4000) * price   
        annual_cost = monthly_cost * 12
        print month_prompt_text + locale.format("%d", monthly_cost, grouping = True) + \
              annual_prompt_text + locale.format("%d", annual_cost, grouping = True)
    else:
        print "Please discuss licensing with your service account manager"
        
    
        
calculator(4500)

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