Found an eBay-like Blog!

yesterday evening while i was bored sitting at my computer, i randomly found this page: www.blogimarche.blogspot.com . It's a German blog, where girls sell their clothes via second hand. i already found 4 very nice things, but not sure about buying or not... this flower scarf and this white/purple/black one, this (the rightern one) lovely tee for incredible four euros too, and this chanel-like dress for twenty euros. should i buy them? what do you thing? xxx