Okay, let's get our terms straight. A real Vespa S150ie scooter sells for $4,400 and tops out at about 59 mph. The "Vespa Type" scooter your looking at sells for $750. Vespa makes cool, reliable scooter that will last for years. The way, way less expensive "Vespa Type" scooter is, well, something else.
If you want a scoot that is dependable and works well, you need to spend the money and buy a real Vespa, Piaggio, Honda, Suzuki or Yamaha. The Honda SH150i is very nice and sells for $4,500 with more dealership support than the Italian bikes. The PIaggio Fly 150cc is only $2,900 and their radically sweet 3 wheeled MP3 250cc scoot costs $7,200.
Sorry. Just tellin' it like it is.