I know this was available for bit less before i.e. circa £15.99 but currently this is the best price for digital inflator.
Analogue inflator is £9.99 on 7dayshop.
After much delibration I went with Digital inflator mainly due to the automatic switch off.
If you cant wait for a better deal then this seems to be a good deal!
Ring branded RAC600 is Available for £19.00, BTW it looks similar to this un-branded product.