Haha, tell your friends to practice more!! Haha
It really depends on a lot of things... say rego on that car is going to run out soon, you can bargain it down probably $600, a few scratches here and there, inside/outside condition (paint condition, dirty interior with poor condition), or heaps of km's on it for it's age (more than 20,000km a year), no roadworthy (not in this case), probably 600 to 2k?? you can bargain down.