Parts are bit expensive but they are easily available nowadays. According to my info Suzuki dealers can be found at area behind dilpasand urdu bazar, nazimabad, waterpump, nagan chowrangi, up more, johar.
If you go for Suzuki then I would recommend Raider not eco as eco chasis is flat. Raider is more upright thus rider much pleasant ride and greater comfort.
Honda 100 is also a very good bike and comfortable. Its parts are also expensive.
As already said before if you go for looks then Pridor is ahead and if you are looking for power and acceleration then go for suzuki.