Wow $29k is cheap for a 2016 Golf R with only 80,000km. I sold my 2016 Golf GTI with 60,000km about 6 months ago for $28k.
My brother had a AW Polo GTI for short period of time a few years ago and I must admit, it did feel cheaper to drive - probably the torsion beam rear suspension had to blame as its much less refined (and cheaper to manufacture) than the independent suspension used in the Golf.