All three seasons look great (1440x1080). They were originally $24.99 per season on AP. Then about mid-January they dropped to $9.99 per season. I snatched all three up considering it a steal. Not sure if the $9.99/season pricing is still available though. If not, I'd add them to my watchlist and periodically check on the pricing. That's what I did and it paid off.
I love GI. I have it on DVD. Are the 1080p scans of film or upscaled of original 480p? Definitely but again if quality is bumped way up. Thanks!