In an Indy game that's ok, but these days Electronic Arts or Ubisoft charge you extra if you want to play the game early. I'm also a early player of Kerbal Space Program and I'm very happy with the price I payed for it, but even so, they took a looong time to fix "the Kraken" and mod support, but again, it was a worth the wait and money.Early Access is a good concept if pricing reflects the current status.
Kerbal Space Program was my first early access game and the $18 were totally worth it, considering its success and current pricetag.
For a $60 title to be unfinished at launch and/or full of bugs? Thats a Nope.