The problem lies with the buyers, not sellers. If folk are 'desperate' , ( I am being reserved on wording as my real thoughts are way different ) to pay any way near that, then that price becomes the new benchmark for a valuation. Also this could lead to the parasites buying a complete good c5 to strip and sell parts. Parts recently have just gone beyond stupid ( or buyers have ) , £13 for rear mast grommets , near £20 for 1 rear centre cap
At the moment a c5 can be bought for reasonable money and enjoyed for fun at low running costs, soon they will just have a high price tag with high parts costs and more will just be stripped for parts by parasites and fewer folk buying and entering the c5 fun. rant over
... watch my battery level fall after that.