Arntz - historically significant and valuable, or just an old kit?

[750hp]

I live in Australia and it's apparent that there isn't the same value placed on originality in cars over here - Cobra or otherwise. For example, nobody particularly minds if your Cobra is powered by a big or small block, Ford or Chev (or quad cam Lexus for that matter). Similarly, matching numbers muscle cars won't bring the big bucks that they'd command in the USA.

I'm interested to hear what sets the market value for an older replica for you guys. It seems like an Arntz is likely to sell in the $20K to $27K range for a 30 year old car, while a similar vintage Contemporary might be another $10K on top of that.

Seems interesting that a 30 year old Arntz is pulling the same dollars as a brand new F5, but is half the selling price of a 15 year old ERA.

In one way, I thought the brand that many would see as the one that started this industry should be worth more than they're selling for. In another way, is it just another old car that's past it's prime and valued accordingly?