There are/will be 3 singular episodes on DVD in Region 1. There's 3 multi-episode DVD in Region 1.
The season 1 box is being released one disc at a time in Australia, which is Region 4.
Season 1 and 2 are currently on Netflix, along with episodes being available on iTunes.
Shows rarely release as full season box sets as they did in the early 00's. No one wants to spend $50 on that, and they don't sell all too well. It's cheaper and more convenient (usually) to just throw them on Netflix, Hulu or what not.
If they're releasing the full season (eventually) in Region 4, they might do so in Region 1. Then again, you can't get the second season of G1 in Region 1, but that was a different time.