Armitage III: Dual Matrix will retail on DVD for $19.98. The feature runs 90 minutes and has bilingual 5.1 soundtracks.
Armitage III: Dual Matrix Special Edition run 125 minutes. This has the extra features, isolated score and character guidebook and retails for $29.98.
Armitage III: Polymatrix/Dual Matrix DVD Set runs 180 minutes, containing both movies. This retails for $39.98. The Dual Matrix version here is the special edition which contains extra features on it such as the featurette on making it, the isolated music score, booklet and more.
Armitage III: Dual Matrix Special Edition w/ltd edition lunchbox/figure retails for $49.98 and only contains the Dual Matrix feature but the special edition of it. It is also packaged in a limited edition lunchbox that contains a limited edition variant of the Armitage figure manufactured by McFarlane Toys
Phew! So many options, but for those who just want the movie, you'll be able to score it for around $14 online. Those who want all the shiny limited edition stuff, I'd make sure to get an order in as soon as they start showing up at retailers since the Lain lunch box sets sold out very fast.