I'm afraid I concur. The only brand that may consider this would be Aeroclassics and even then I doubt it. Now if you're willing to pay for the production run then that's a different story, but let's say the unit cost was $25 you're looking at an investment of 25*120=$3,000 to get an Aeroclassics size run down, 25*180=$4,500 to get a small run done from someone like Panda and a more normal size 500ish run would probably get you a lower unit price but would still be something like 22*500=$11,000. Those figures are all before shipping, import taxes and GST.
How many of these do you think would realistically sell? I'd guess probably 30-80 maybe?
I admit I like to consider myself well versed in Australian aviation too and I was unaware of this and it only flew for 1 year.
Adding to your issues is that barely anyone has a 727-100 aside from Aeroclassics.