just an idea after scrolling down ebay where i seen 4 brush heads and various jets etc for sale for 60quid
would you buy a bundle off gardiners if they offered say a variety of three poles and variety of different brusheads and a large number of spares to keep you going for a decent while for discounted prices bit like the unger traditional kits you can buy in a bag but for waterfed
some type of kit out like dazmonds whose got pretty much all bases covered for a larger discount