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Two of the 'dragons', Theo Paphitis and Deborah Meaden, were impressed by the sales pitch of company founder and former Sotheby's director Patrick van der Vorst, who hopes an increased spend on marketing will increase the traffic levels of customers seeking "an expert valuation from £3.89 within 48 hours."

The online valuation formula (one attempted with limited commercial success in the past) includes the input of 40 arts and antiques experts. 

Speaking from his office in London, Patrick van der Vorst said, "With the help of my dragon investors I can put my service on the map. My vision of offering inexpensive valuations to all is about to be realised."

So far the company, established in September 2009, has given 21,000 valuations to 12,000 customers.