Thanks for your post MarkRoberts9. We recently changed the flight booking engine on our website to integrate it with our sister, UK-based website seatplans.com. Both sites now use this booking system which is powered by Travelocity.
You are correct that the fares are quoted in $US – this reflects the fact that a large proportion of visitors to both businesstraveller.com and seatplans.com are either based in the US, or in a country where $US is widely used as a currency.
However we understand that the previous flight booking engine (powered by Global Travel Market) was useful for flight fare comparisons, so we are looking into re-instating this service alongside the new system, to offer as wide a choice for our readers as possible. This should be actioned shortly, and we will let you know once it is live.