2006-2007 Old Shape 2 Door mira manual will cost you around 4.0 -4.5 (depending on the condition of the car ) New shape mira will cost you around 5.0-5.5
Mileage for manual transmission mira is good around 13-16 and AT will give a max of 10-12
It's an ideal car for beginners If you are getting one in good price you should go for it.
Pros:
It's best Value for money much Better Comfort & drive then any of it's local counter parts like coure,alto, santro etc.
Cons:
The only con is that Parts are bit expensive but all parts are now easily available and these Japanese spare parts lasts much longer then the local OEM Crap.