You be wanting to be getting a good deal on price, it is not like Golfs are rear and with the Golf 7.5 around the corner dealers are giving the current models away.
Out of interest what model Golf are you looking at, unless it is optioned up or unique my alarm bells ring 1. why is this car still sitting around as stock plus 6 months and 2. why the high kms.

I recommend another dealer, if you don't think this is right then the dealership has lost your trust.