The three speed Bike is not much more £ than the single speed when buying new - conversion to 2 speed is easy and not expensive and you may think about keeping the 3 speed kit if you ride outside Holland.

Have you also compared Euro prices in NL with £ prices in the UK - maybe because of the fall in the £ you could save money by buying in the UK if you ever visit

Holland - one of my favourite countries, we lived there for 3 years from 1979 - in Amstelveen and we have visited quite a lot with good friend there