I was trying to find "across the sea of suns" by Gregory Benford as an eBook for sale in the UK, but unfortunately its not available so I thought I'd try something

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I set up an account on Diesel eBooks with a fake US billing address but using my credit card which is registered to a UK address, and guess what BANG it worked

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Only drawback is that my bank keeps calling me about "transactions" on my card lol.