I was rather surprised to find the complete series 1 for only 8 pounds as the vol. 1 (episodes 1-8)
and vol. 2 (ep. 9-16) cost just as much each. This seems a far better deal as it contains all 28 episodes from the first series which means it has a duration of almost 11 hours. The next best price is £12 pounds at Store4DVD. Yes but is the series any good you say? Well the reviews I looked at seem positive so I already ordered one for me...Here are some review links:http://www.animenewsnetwork.com/review/heat-guy-j/dvd-1http://www.scifi.com/sfw/issue327/anime.htmlhttp://www.animedistrict.com/review.php?id=50
By the way the item is out of stock currently BUT that's only temporary so buy before they get it back in stock and increase the price!
PS. Don't forget Quidco for a better-than-nothing 2% back.