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.

The first installment of this analysis is shown below. The average sale price is £13.29 and the average of the top 20% of the most expensive items is £47.38 during September 2011.

The boring bit, this analysis is based on:

• Completed eBay listings
• Items from the pottery and porcelain category
• Search for key words (including 27 company names and general terms such as West German and Fat Lava)
• UK based sales
• Sales price excluding postage (from November 2012 analysis has included postage costs to give a truer reflection of actual values)
• The most recent 100 sales from that month are included

The average figure is calculated based on the average of the sale price excluding the 10% mots expensive and least expensive sales. This means of calculating the average should provide a more robust average from which to monitor trends.

The top 20% sales figure is based on the average sale price of the top 20% most expensive sales. This should provide an indication of trends in the most desirable West German Pottery.