I dont know how good they are but
IMAX - Australia: Land Beyond Time
IMAX - Alaska: Spirit of the Wild
IMAX - Antarctica: An Adventure Of A Different Nature
9.99 + free shipping
http://search.deepdiscount.com/search?p=Q&uid=360408980&ts=custom&w=imax&isort=score&method=and&af=cat1:hidef