You will get almost same price everywhere.
I don't think that buying an Alto on petrol would be a wise option. Fuel consumption of Alto is even worse than a Vigo.
Why don't u consider a Japaneese 660cc manual transmission Alto.. It has everything which a car needs like ABS brakes, Dual Airbags, Good interior and much more comfortable than a Local ALTO. Don't underestimate this car being 660cc in terms of power. It has got lots of potential.