Firstly there aren't much cars left. Most remaining ones are Oriel Manual out of them. Secondly, Trust me a load of people will buy it. There are many senior citizens and corporate offices and budget conscious people who just want a zero meter car regardless of its shape being old or not. All these eventually sell. And if priced at 22 for Oriel PT, the gap will be 3 lakh just for the sake of shape according to such people.
By virtue of this "no one will buy old shape" 3-4 years used cars should be half the price. And it doesn't happen in Pakistan. Not everyone is an enthusiastic Pakwheeler eager to get hands on a new shape even if it has to be leased. 3 lakh is not a small amount for many.
Many many many people are cribbing over 24.99 Oriel price to be insanely high with a gap of 1.75 over Grande (after navigation) so we really shouldn't expect people to not buy the out going shape brand new car for 3 lakh less than new shape.