The commerce generators shipped with currency=GBP on every order, refund,
authorisation and chargeback -- twelve places, all of them a default
nobody chose. Dollars is the convention everywhere else.
Only the label changes. The SKU prices stay as they are: a $489 task
chair and a $629 standing desk are as plausible as the pound figures
were, and moving them would have shifted average order value on the
demo's dashboards for no reason other than tidiness.
Nothing else referenced the currency -- no dashboard panel and no alert
rule filters or groups on it -- so this is the whole change.