10 x 10 litre Ortlieb water bags on ebay, UK
 

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=8716629055&rd=1&sspa gename=STRK%3AMESE%3AIT&rd=1

This link is for 8 black bags. Click on seller's other items to find 2 more turquoise bags.

[This message has been edited by Nick H (edited 02 November 2005).]