The UK operation of eBay says that more than ten percent of sales made through its site in August were via mobile phone.  An item is sold every second on average via mobile and more than two million items were sold in this way last month in the UK, the company said. Approximately £265 million was spent last year by UK users on eBay via their phones, it said.  Even large value items are now sold via the auction site. In July, the most expensive item sold by mobile phone was a Ferrai F430 Spider F1. Just last week, eBay's Paypal business announced how it proposed to expand its tranactions business from the virtual to the physical world by offering a range of technology solutions to retailers