Silent Bob Will be handy if you post the make of the scooter.
Is it Honda 50?
I had 2XSuzuki KAtana, 2XBWs,Yamaha SPY, Apr RS50, CP 50
and I would not describe them as economical. They were just about ok on petrol, not mentioning tyres, pads, stupid belts and rollers.
I was driving only few miles everyday without going mad and this translated to £2 a day which makes 10 a week. The other thing is that fuel tank is really small and you have to visit petrol station nearly everyday, specially if this is your main source of transport
Got NSR80 after all these grinders and was much better with proper gears. Fuel consumption was really good and very reliable bike.
Consider slightly bigger bike which may cost more to insure but will give you trouble free commuting and will be worth it in the long run.