For Early Access games — and alphas in general — the trend is to offer the game at a lower price to entice people to pay for the privilege of playing / testing a busted version of your work. Stardock's Galactic Civilizations III is one of a number of recent titles that's drifted away from this model — instead, you'll need to fork over more than what the final version will likely go for, in Stardock's case, this the rather heavy amount of $US100.
It'd be remiss of me not to mention that your $US100 ($108 locally) gets you all the DLC and expansion packs the developer will release for Galactic Civilizations III, as well as some additional bling in the form of a forum badge and access to "exclusive" art and music content.
What Stardock has going for it is the fact it's not an unknown indie that might close up shop in three months' time. It also released no less than four expansions for the previous game in the series, so you can have some confidence it'll follow a similar pattern for this outing.
Still, is this the sort of model we can expect from other developers going forward? Over the years we've seen a race to the bottom of sorts, when it comes to indie game pricing. It was inevitable we'd see some push back.
It does seem to be working for Stardock at the moment — GalCiv III is currently #19 in Steam's top seller's list.
Galactic Civilizations III [Steam]