Prices depend on the Grading of the car. And frankly you cant get a good car for this cheap. Keep a 12 lac budget in mind.
Now for your queries..
Features.. Google em. Passo come in different Variants. 1.0/1.3 X,G, Hana, Hanna plus etc. All have minor differences in features like climate control, Navigaion, Fog lamps, Difference in lighting, Sofa seats etc etc.. For a proper thorough inspection, u can google it.
U can only verify auction sheets using the lot number online. But this can only be done for cars which were imported in the last 3 months. Otherwise you cant verify it
For paint , Take along a trusted painter, otherwise auction sheet has details of parts damaged, painted, replaced etc.
I would advise not buying it from a dealer and not buying a Pakistani used passo. Dealers are dealers and they will fool you in so many ways that you cant even imagine.
And for the prices they are quoting m not surprised.
I imported my Passo myself, it is an RA grade car (its rear fender was replaced) and i got it for around 12 lacs, Ab socho dealer apna margin tu rakhega na.
Buying a JDM is a pain in the *** but the rewards are awesome ! I am in love with my Passo