You will find the Season 1 Region 1 DVD for sale at Amazon.com
. Seasons 1-7 on Region 2 DVD are sold at Amazon.co.uk
, HMV, Play.com and other reputable places. Amazon.co.uk
does deliver internationally, however ensure your DVD player can play Region 2.
You may find seasons on eBay
for less money but be careful as some fakes are sold.