No Respite on GDT Auction June 8, 2015 12:00 am The latest Global Dairy Trade (GDT) auction on the 2nd June provided no optimism for hard-pressed dairy farmers. Prices followed the recent downwards trend with a further drop of 4.3% on the values seen a fortnight earlier. This means the market has fallen by a total of 33% since mid-March. The weighted average price is now down to $2,412 per tonne. This is the lowest it has been since 2009. As recently as February 2014 the price was over $5,000 per tonne.