OK then, there are some of the reasons that some will pay extra for these.
BTW there are a few other extras you have left out of your list which would co$t lot$ if you went to add them to a standard Perentie.
There has been a bit of discussion on whether there are many of these yet to be sold. AFM says no but they only know what is in the immediate pipeline. Others doing the maths say there are a few yet to come.
Obviously the one noted above in this thread is too dear but I hope you come across one that suits in the near future. Several have been resold after purchase from AFM and there will always be some owner who wants to get something else.

