Iain Sinclair was one for years before becoming an author in his forties. The characters he writes about from his book dealing days are quite interesting - Cockney wide-boy types who have drifted into book dealing and become quite intellectual in the process.

Not sure it'd be quite the same nowadays with the internet, it's so easy to compare prices and find a bargain - obviously book dealing relies on buying a book for one price and selling it on for more.

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It's political correctness gone mad!