Originally Posted by
grannieflyer
It is possible (from Australia at least). Try booking a 'dummy' business class return fare, and a 'dummy' economy return fare, note and compare pricings. If happy, try making a proper one way booking in business, and a proper one way booking in economy, normally their web site prices the outward and return flights separately in any case.
Sorry but your advice about pricing fares is inaccurate to say the least. Two one ways are NOT generally cheaper than a return combined fare (J outbound, Y inbound). And they're definitely NOT the same as seeing a return fare.