I was looking for an electric toothbrush and this seemed like an excellent deal. £40.86 from Flubit, delivered. The "Oral-B Smart Series 4000 Cross Action Electric Rechargeable Toothbrush Powered by Braun" offers the following modes: Daily Clean, Gum Care, Sensitive, Whitening. It is also compatible with the Oral-B App so you can track your brushing progress.
The Sensi Clean variety is currently £60 on Amazon and the 3D white is currently £54.99. It is the same toothbrush however, so you can buy the cheaper brush and buy the different heads separately.
£49.99 Groupon, £49.99 Argos, £59.97 Superdrug, £78.99 Very (delivered), £130 Debenhams