Here is the link to our Step-By-Step Guideline "How-To" dismantle Prius PHV dash to take the Instrument Cluster (aka Speedometer, Odometer) out:
The OP, like me, is in New Zealand. With no Prime availability confirmed, PiPs are all imports from the Japanese market, mostly by Toyota who refurbish them to as-new NZ specs including a English language dash/console, and who then market them with a 5-year warranty. However some are imported by dealers and sold as-is at much lower prices, hence the opportunity for after-market conversions which I presume this is aimed at...