These seem pretty good value. Have ordered one and will let you know if it's the genuine article! No reason why it shouldn't be but it's about half the RRP!
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=330550400066&category=57990&_trksid=p5197.c0.m619#ht_3190wt_907
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=330550400066&category=57990&_trksid=p5197.c0.m619#ht_3190wt_907