The Online Photographer is commenting on the most overpriced camera in the world. In his opinion it's not Nikon D3x or Leica S2, it's the Diana Mini! The little plastic camera that's worn like jewellery by trendy people in trendy places.
The overpriced camera tag is probably correct, assuming that a camera that costs $1 (a guess), to make - and sells for up to $100, that's a healthy mark-up. But that's the price people are willing to pay for distinctive analogue snapshots, plus it looks very cute.