What is the value of a six inch Mr Pickwick Royal Doulton Toby Mug?

July 2008 I was in an antique shop in Saratoga, California and the price on the Mr. Pickwick Toby Mug was $220. I looked on eBay today and there is one mug from a dealer who states "book price" at $175 but has the mug listed at a "buy it now" price of $80 including the cost of shipping.