Yes yours wasn't even worth 16k. When I was looking for my car I came and had a look at the car you were selling and it was in shocking condition (paint swirls, wires hanging out everywhere, cable ties holding parts together and just presented terribly).
Also, you told me you comply them yourself, so no wonder it only cost you 15k (not to mention the second hand tyres and the km changing more then twice).
This car is in perfect condition with all the extras like A-LSD, mats, etc.
There are plenty of good condition S2 selling for more then 20k (look at Carsales, etc)
So once again thank you for your comments and have a nice day!