Billing System ESLOC Values

Total ESLOC = 30,000
Reused % = 30%
Application ESLOC( (Total * (1- Reuse %) ) = 21,000
Persistency Framework ESLOC Used = 7000

Billing Systems Application Costs

Cost (Analysis through Test) = $100,00.00
Framework Cost (Integrating Persistency Framework) = $5000.00

Persistency Framework Savings

Billing System Cost per ESLOC (Application ESLOC / Cost) = $0.21
Framework Cost Savings = (Cost/ESLOC * Framework ESLOC) = $1470.00
Return on Investment (Cost Savings $ -- Framework Cost $) = $-3530.00

Figure 5: Sample billing system analysis.