How Much Does a Transition to IPv6 Cost?

The secret is that in most cases, it will already be available, and in other cases, the cost will be not that high; with a possible payback in performance gains. Think 'dusting' off old equipment, cleaning up of network infrastructure, and possible the elimination of 'dead' network lines, access, passwords, e.t.c.

End User

Today's operating systems, like Mac OS X, Windows, and Linux, all have IPv6 incorporate. IPv6 embedded functionalities will kick in (automatically) whenever an IPv6 message lands in their environment.

Enterprise Users

Of course, every business network is different. Strategies employed to transition over to IPv6 differ.
Funding and budget requirements to plan out see fixed costs dropping. Many vendors, Network Hardware, Server Hardware, Operating Systems as well as application software, reducing prices year over year, and embed the great majorities of IPv6 capabilities "at no cost."

I have seen more than once that a client was totally surprised that ALL needed IPv6 capabilities were already present in the routers, switches, firewalls, load-sharing equipment, as well as server operating systems they had upgraded to in the last few years. NO ADDITIONAL COSTS.

Often, a majority of funding resources is needed to support operational cost, one-time training cost, upgrade of management databases, and documentation updates.
And even that, after some discussion, became part of a better ROI for the network at hand.