I'll have to respectfully disagree on the auto vs. manual thing. Call me a Luddite, but I still prefer the control and predictability of a manual. I find that when driving an auto, it's easier to let your speed creep up and it's easier to get distracted. I've also observed that most manual drivers slow down sooner when approaching hazards and the temptation to 'multitask' behind the wheel is far less. I actually believe our roads would be safer if more people drove manuals, but that's a whole other debate.
Benz chases the luxury market and defence contracts with the G; both markets that want their cars to be as idiot-proof as possible, which is likely why they've ditched the manual option.
On the price thing; you make a fair comment. The Benz is hand-assembled and low volume (like the Defender), but I'd hope that you're also paying for quality of componenetry and some finesse in assembly and finishing (not like the Defender). To say half the price was an exaggeration. If it were priced in the 70 series/entry 200 series ballpark, it would probably be worth the investment. Although, across much of the country, you'd still have the problem of there being no regional dealer support.
I'm surprised that with the popularity of four-wheel driving and camping as recreational pursuits, the resources sector's massive appetite for fleet vehicles and the notoriously harsh environments encountered in Australia, no-one has ever developed a realistic home-grown alternative, even if it used off-the shelf parts. Something like Foers' Ibex or a civvy version of the Polaris Dagor maybe?

