Sale prices on eBay have been investigated to look at West German Pottery price trends.  The aim is to monitor the changing value of West German pottery through analysis of UK eBay sales. The intention is that this will provide a barometer for the popularity/desirability of Fat lava items.

January 2012 sales indicate a slump in the sale prices compared with the previous four months. The average sales price was £12.45. The top 20% most expensive items average sale price was at its lowest level (£32.03) since monitoring started in September 2011.

To see more detail on how the values are calculated see here.