[[https://easyerp.com/erp-guide/erp-roi-calculation/|
ERP ROI Calculation, How and What For?]]

[[https://www.1tech.eu/company/newsevents/-/blogs/open-source-erp-transforms-roi.html|
 Open Source ERP transforms ROI ]]

[[https://www.chuckboecking.com/adempiere-open-source-erp-roi/|
ADempiere Open Source ERP ROI]]