e9e2164b_utomation_Testing__Load_Runner__Remarks
[S.No] 2 [Type] Application [Factor] Repeat functionality [Impact] High [Remarks] 
It is quite easier to automate incase the functionality repeats across the application (Recommend to use keyword driven in such cases, as you do not end up in writing more action/verification based methods). If NOT, then the effort of building libraries and/or scripts is more linear in nature.
Estimation Guidelines for Testing Projects |Software Testing Times - Tutorials, QTP, Manual Testing Automation Testing, Load Runner
Remarks