WELCOME to LMF @ LawnWorld...
We do not have that model here in the states, The husqvarna commercial Diesel here is powered by a Kubota diesel rather than the Daihatsu/Briggs&Stratton. I have seen that engine on some things, it is an fair engine, Not one I would deliberately look to have on anything.
With the actual selling price being around 15,000 your price at 8,000 for a used Looks to be about right, it is close to Half price.
I would check if they changed the Hydraulic drive system And/Or the Diesel engine on the New PZ series.
WOW, When you consider the exchange rate in USD vs Euro, It would appear Commercial Zero Turns are Much more expensive in Europe than here.... :smile:KennyV