THESE ARE THE DOUBLE BRUSH HEADS - AND THE PRE-REDUCTION £14 PRICE BEAT EVERYONE ELSE.
I went into Tesco - as their £14 price was the best price for four heads - and I found the price had been dropped by over £4. I guess its instore only.
Elsewhere the cheapest is £8.80 for two, and is far cheaper than the Ebay price - and you know these are genuine.
Cannot really say much more, other than its also on the flossing heads with the little yellow and blue flippers too.
God - I can be so technical when I want!!!