I couldn't have put it better myself @NoBlackThunder
And who knows the may be charging at a premium to not only cover costs but also to provide better support for those playing and/or testing the game than they may very well lower the price to $30, $25 or $20 USD when the game reaches Steam in a Beta state of completion.
Though who knows as they could be following the same approach as most indies are as in they price the game low at first due to their potential customers taking a risk with backing/buying into a game in an early state of completion but also as an reward for those believing in them early on e.g. Steam Early-Access BUT than they start to scale the price up as the game progresses.
Honestly I'd say it would be ill advised to price the Beta at say $60+ USD and I'd suggest the developers scale the price down when they hit Steam in beta to help gain a much larger tester base of consumers for the game.
The downside with this is that current owners of Eco MAY be slightly put off that they paid $35-$40 on the game in Alpha and it is now $25-$20 on Steam BUT I feel those customers would be an acceptable minority and pricing the game in such a way benefit it and the community greatly.
Perhaps @JohnK can touch on this subject further but I'd assume it's too early to tell what their future pricing roadmap may be, not to mention if they (the developers) are even willing disclose their plans on that matter to us, the community/consumers to begin with for various reasons.