Circle Trading Circle is a Boston-based financial services firm most popular for their money transfer app. Fees are stated to be 3. One of the easiest ways to buy Bitcoin in Hong Kong is through cryptocurrency exchanges. Up until recently, it was also possible to buy crypto with cash. In fact, Hong Kong is flush with 31 Bitcoin ATMs, making it really easy for anyone looking to buy Bitcoin to simply turn up at one of the machines and quickly purchase the digital tokens in a fast and anonymous manner using cash. As a result, Bitcoin innovation and adoption in Hong Kong should increase, but potential downside could arrive in the form of those exchanges or participants that are unwilling to operate within the rules. The website localbitcoins.