This is a MFG. I do not carry out an eff. cost calculation as requested. For me, the features/convenience for all users in the home network are in the foreground, such as full duplex, also scan, merge documents, scan area/section, enlarge, auto-feed, OCR, etc. Also direct print for WLAN users. I save many scans without printing. The print quantities are relatively small (home use), so the print costs/sheet are not so crucial for my applications. I have not set up the FAX application.