around $2,000.

That's with 20,000 miles. This is a 2004 Golf GTI, previous owner was male and being such popular car for men in their 20's any previous owners were probably also male. The average male drive 16,550 miles a year, though its more like 18k for young men. But lets be generous and use the 16k number. That put this car around 215,000 miles making its fair trade-in value $860 and private party value at $2,600

However, this is all according to KBB estimates which are known in /r/cars to be very high. Edmunds puts the trade in value of this car at $557 and the private part value around $1000.

Also keep in mind it can cost several hundred bucks to sell a used car to a private party (inspections, ads, etc.)