shortlist the year range,
then the specs u looking for...
PW classifieds is not a good price reference, u can get alot of good deals in the market, and from newspapers.. though i would prefer nevspapers stuff.. however before buying,make sure to get the documents verified, and that there was no body change.. also 99-02 got straight gear shift, while 03 onwards its zigzag thingy.. there ian't much lexus so don't fall for it, changing logos doesn't mean its a lexus..
a diesel variant will be amazon or vx ltd, mostly, however there was no cygnus in diesel, mostly its kit change, petrol ones r all JDM here.. unless u lucky to find an officially import one.. or the thai variant..
,make sure engine, gearbox, suspension is in awesome condition and vehicle has not been abused...
u can post pics here and m sure many would be able to assist u virtually if not physically....