Does a published price include every step?

Not necessarily. The table repeats the number the clinic published. Ask that clinic whether the crown, abutment, imaging, and any extra procedure are inside the figure.

Can I compare these prices with another city?

Only by opening that city's own cost page. Kolkata rows are not copied onto another city, and another city's rows are not copied here.

Dental Implant Cost in Kolkata | Treatment Price Guide

What changes a published price

The number on this page is the clinic's published figure, not a ReplaceRoots quote.
Two clinics are comparable only when you know whether the crown, abutment, and imaging sit inside that figure.
An implant system is named on a clinic profile when that clinic recorded it. This page does not assign a brand fee.
Extra procedures appear in the table only when a Kolkata clinic published a price for them.