jackstee the electric ones are classed as an electric bike so no insurance, licence or tax.
Heatherhanum - the cheapest insurance is with Gunes at the moment and then Andalou are the next - the Renault Garage opposite Kipa use both companies - if you go in the main entrance the insurance people are on the far right of the showroom. Fatih speaks good english and is very helpful. Should cost you between 25 and 30 lira for the year.