That is purely your own choice.
If you like Toyota Passo (which I personally don't) and that too in red colour (again not my preference) then it seems to be a nice car. It is up model and price seems to be reasonable too. But after seeing 1000 cc Vitz I'm not sure whether its counterpart (Passo) has better pick and drive. Some people are very much satisfied with 1000 cc Vitz, but I'm not.
And don't make up your mind before physically seeing the car in detail. It may be in such good condition that you can't resist. And it may be in such bad shape that you'll reject it forthwith. Also, please keep in mind that some of the imported cars require heavy maintainence when they arrive in Pakistan, if not all. But if the present owner has done all that then you can relax.
In short, first see the car then decide