I bought an 8 year old Golf with over 100k km over 2 years ago and paid around 12k EUR for it, new it was around 32k.
For context this is in the Netherlands, I do believe cars are a bit more expensive here but I can't believe a new Golf would cost 15k anywhere.
To be clear I'm not calling you a liar or anything, I'm genuinely curious if there are such major discrepancies between countries.