Choosing a study edition of Britain's Economic Blockade of Germany

Is Osborne's Britain's Economic Blockade of Germany, 1914-1919 worth £50?

Yes for repeated reference use. For a single read, the suggestion is to look for a cheaper Kindle edition, although its actual price is not established.

Osborne's book is recommended at £50 for someone who expects to consult it repeatedly. Clarke says he has used his physical copy often enough to justify that cost. For a single read, he suggests checking the Kindle version in the hope that it is cheaper. He prefers a physical copy for a source he expects to rely on.