Although I think this is the older 9500 model for approx £34 delivered (not sure on the exact figure my maths is rubbish!) this is a good price (with quidco). IT gets good reviews on Amazon. To get it for this price go though quidco and use the code GIFTGUIDE10. 20% off.
I know it was £39.99 last week but was OOS.
There are other toothbrushes such as the sonic oral b one also on there if you prefer you could add the discount code to this one instead..