What are some of the quantitative methods for determining the Value of a work item ?

The value of a work item can be determined by using below techniques –  

Bubble sort –

Start at the top of a list of epics/ capabilities/ features/ stories 

Compare value of epic/ capability/ feature/ story one at a time

Move the lower value epic/ capability/ feature/ story down one place in list

Repeat until all epic/ capability/ feature/ story have been compared

Planning Poker –

Pick a low value epic/ capability/ feature/ story and Assign it an average point

Use estimation cards to independently estimate an epic/ capability/ feature/ story

Show estimates, discuss highs and lows, estimate again 

When everyone is within three cards, average the estimates

Break even Analysis –

Compare cost of epic/ capability/ feature/ story creation with expected incremental revenue of feature

How many incremental units would the company need to sell to equal the development cost? 

Cost of Delay –

Estimate the opportunity cost of NOT completing a epic/ capability/ feature/ story

Divide by epic/ capability/ feature/ story size to get a “proxy” for ROI 

Return on Investment ( ROI ) –

ROI = (Total expected revenue from new feature)/ (total cost to develop feature) – 1

And expressed as a percent