Philips sonicare - are there any decent, cheaper toothbrush heads about?

[Suddengeekgirl]

I've got a Philips Sonicare toothbrush and just gone at the price of new heads!

Can anyone point me in the right direction for compatible heads that don't cost ££££.

Thanks! :)

I got a pack of 4 on Amazon for about £3. Just search 'Sonicare compatible' and loads come up.