Well for now u can get a 2nd hand vios for around 50k++ for the 2003 E version while the G version can be get at 60k++ for a 2004 model onwards.

What i know is try to avoid the 1st batch, means 2003 models as they were problematic. Also beware of immobilizer problem which were found in the 2005 model.

Otherwise, the vios is a great car, with superb reliability, sufficient power, good FC, good looks as well. Just its small interior space, poor interior quality and lousy UMW service are its drawbacks.