from the introduction:
At the core of the Great British Republic is the concept of Free Trade. Thus you can buy almost anything, for a price. There is not restriction on the purchase of items that in other settings might cause the authorities to blench.
However, how you use what you buy can bring about the unwanted attentions of the Police, or if you are very unlucky – the Auditors of the Committee for Public Safety, a latter day Inquisition if you please.
This one page supplement for Machinations give details for the currency system and a range of equipment that can be obtained.