Where can i get such cheap uggs, but genuine ?

my neighbour got her Bailey on Fancy Boots Chestnut: http://www.uggkingdom.de/ugg-bailey-on-fancy-boots-c-18/ugg-bailey-on-fancy-boots-chestnut-p-75,,, i like it very very very much. but where can i get a same one in same price? the key is i am not used to buy things online, i don't think it is safe. so, any suggestion, where can i get it?