Buy or sell Substratum in Poland on Changelly. We support VISA and MasterCard credit and debit cards, Apple Pay, and bank transfers. We offer the best way to buy Substratum securely in Poland. We will give you access to a wide variety of fiat providers. In addition to that, you can use any fiat currency to purchase SUB – we will convert your national currency into USD, EUR, or GBP at competitive rates.