That Coupe looks nice, no idea on whether this example is keenly priced.
You may well be correct on overall Coupe production numbers being lower than the Aeromax but the numbers that matter most to a UK buyer are RHD UK-registered cars. You may find the Aeromax is more scarce on this basis, with around a dozen or so cars remaining registered in the UK. If you want an Auto, then you are talking about even fewer.