If you are looking at their website using a browser connected to the internet, you don&#x27;t need to do currency conversions in you head and memorise the exchange rates every morning, you can just use that same browser to ask for a currency conversion from any of a number of sites, e.g.<p><a href="https:&#x2F;&#x2F;www.google.co.uk&#x2F;webhp?#q=1%20chf%20in%20usd" rel="nofollow">https:&#x2F;&#x2F;www.google.co.uk&#x2F;webhp?#q=1%20chf%20in%20usd</a><p><a href="https:&#x2F;&#x2F;duckduckgo.com&#x2F;?q=1chf+in+usd&amp;ia=currency" rel="nofollow">https:&#x2F;&#x2F;duckduckgo.com&#x2F;?q=1chf+in+usd&amp;ia=currency</a><p><a href="http:&#x2F;&#x2F;www.wolframalpha.com&#x2F;input&#x2F;?i=1+chf+in+usd" rel="nofollow">http:&#x2F;&#x2F;www.wolframalpha.com&#x2F;input&#x2F;?i=1+chf+in+usd</a><p>If they are charging in CHF, then it&#x27;s in both their and their customers&#x27; interests to quote in CHF, otherwise fluctuations in currency markets and variations in the exchange rates offered by their customers&#x27; banks will invalidate those quotes.