Seems very expensive for four movies, but if you are a fan it might be worth it.
£41.07 (once take off VAT and add shipping)
http://www.amazon.co.uk/Indiana-Jones-Complete-Adventures-Qu…
£57.74 for the limited collector's addition - contains Over 6 hours of bonus content
Soon to be announced exclusive memorabilia. Probably won't be offered in OZ.
http://www.amazon.co.uk/Indiana-Jones-Adventures-Quadrilogy-…
JB hve it for $99 but no release date yet, but assume it would be similar.
http://www.jbhifionline.com.au/dvd/dvd-genres/action-adventu…
no release date on Amazon US yet.