Niggles: From what i remember all their prices reference back to the pound as a base price i think.
skeletonbow: All I know is I've shopped at Bundlestars for 3+ years now and while I've never seen British pounds on advertised prices ever, they are always shown in the dollar. I don't remember if it is USD or CAD, but it was always the dollar, and all of my previous purchases also show in dollars. The entire website is in pounds now however. Maybe they are losing money on currency conversion due to Brexit or something.
They dont advertise in pound but the conversion always ends up going back to it. Quite annoying the few times ive used them.