This is a bit long but it's made me grumpy.

Having watched the falling silver price over the last yearI have recently started stocking up again on sterling sheet on various thickness. I've been keeping note of the Cookson over 50gm sheet price dropping continuously from 543 per kilo in December 2013 to 471 per kilo on 19th September. On 23rd September I ordered over the 50gm weight and the amount charged was 456.20 per kilo Since then, having seen the silver price continue to fall, I thought I would order some more. The same size and thickness piece now shows as 523.34 per kilo. For this one small piece alone the price has now gone up by over £5. Is this price on the website correct? While I appreciate that the cost for more 'finished' metal types such as sterling sheet and wire will be higher than unprocessed pure silver ingots, I am curious as to why the price of sheet is now increasing while the underlying silver cost is reducing.