In the US, the Helix rack costs 56% as much as the Axe-Fx III. In Australia, it costs 59% as much. That's wicked close. In both countries, you have the option of paying $1000 extra to jump the wait list.
By the way, if you think the Helix is a direct competitor to the Axe-Fx III, you need to audition both of them side by side.

There's a reason for the price disparity, and for the fact that the price of new Fractal gear stays pretty much constant for years.
It's not.
To clarify,
Sound is subjective, your or my opinion about what sounds better can not be taken seriously, as commentary on this topic. Nor am I interested in championing one unit over the other, or a preference, I'm only discussing the respective prices.
My comments are accurate and backed by numbers. And it's clear to any objective disinterested observer or listener that FXIII and Helix are more or less the very same thing, and do the same task. It is also visibly clear that FAS are catching-up to where Helix already reached with regard to ease of interface use, and easy editing. Silly to deny that.
As for sound, I've used only racked multi-effects units live since 1991. I can get the sounds I want out of anything to hand, so claiming something is better is ... meh ... dreamin.
As pointed out further up this page by another person, it's a diminishing returns situation, with each new system, as the practical sound capability and difference in practice is small to negligible. But the FX III being 60% more expensive than its direct MARKET competitor, the Helix Rack, is correct within the practical terms I described (i.e. a full gig-ready rig). Actually the difference is higher, the FX III is more than 60% more expensive than Helix.
Helix full rig: $2,334 + $598 = $2,932 AUD
Verses
FX III full rig: $3,905 + $1,200 = $5,105 AUD
So a full Helix rig is cheaper by this much:
$5,105 - $2,932 = $2,173 AUD
In other words, the very comparable Helix full-rig system is going to be close to $2,173 cheaper, for the Aussie lead guitarist to put it on stage (i.e. it's even cheaper than the $2,000 AUD which I roughly guessed above).
And that $2,173 cheaper is equal to 74.1% of the all-up full-rig cost of the Helix Rack's gig-ready system.
Hmmm ... thus the all-up gig-ready cost of the FX III system is not 60% more expensive, it's actually about 74% more expensive than a full Helix gig-rig.
In other words, an Australian buyer could buy the full gig-ready Helix Rack and its Foot Controller, PLUS a SECOND Helix Rack, for almost the same money, as the cost of a single full gig-ready FX III rig! ... i.e.
$2,334 + $2,334 + $598 = $5,266 AUD
(just $151 difference!)
Note: The FC-12 is subject to the same exchange rate, tax and entry duties, retail, delivey, etc., as the FX III unit is, so adding $1,200 AUD for an FC-12 is probably underestimating its additional costs---it may be more like $1,300 AUD.
And as for FX III having "no competition". lol Look, I'm not referring to subjective audio ranking here (which is more or less almost irrelevant and imaginary, belief-based), I'm only referring to the MARKET competition to attract buyers.
And if you think the FX III won't be competing in the same bid-price market place, to attract to money of the same customer cohort, who want to do the same sorts of things, with either unit, then sorry, you are totally kidding yourself, Helix is in fact FX III's direct market, price, function and format competitor, for the same bag of available money to be spent.
This is all that I mean by "denial", Rex, nothing more btw.
Untill FX III drops to within about $500 of Helix Rack, don't expect many of the available buyer-cohort, to buy the FX III. FX III simply doesn't offer a pro guitarist anything worth paying $2,173 more for, to want to fork out to buy it. But I for one might spend $500, or so, above the best price for a Helix, to buy this new FX III unit.
Consequently, FX III will need to be around $2,900 AUD, or less, to be about where the FX III needs to be just to begin to become competitive, to the buyer's dollars. Or about $1,000 less than priced, currently.
So, I'll wait to see if it becomes market competitive at about that price level before I consider it for purchase. However, if Helix II emerges first, I may never buy an FX III. But that's just my take on the price level outcome.
Have fun, Pauly, Rex, others.