sportage initially failed because of two reasons
1. its karachi made radiator( landi)
2. Its original diesel engine ( 69HP)
now people realise they have other options like
toyota 3s 2000cc (110-240 hp)
mazda F8 1800cc(100 hp)
mazda FE 2000cc(145hp)
that is why people are more interested in sportage and people who have it tend to ask more for it...
if there was no demand for it owners would sell it for less