Wet Brush currently have a £2 off sale at Boots Online link to offer
However, when in the Reading Oracle store, I scanned the 'Wet Brush Pop Fold' in pink and it appeared as £3.50, then took the £2 off, meaning I bought it for £1.50!
I'm not entirely sure what the Boots RRP for this product is, as I couldn't see it on the shelf due to the promo shelving and it's not online but they usually RRP around £12-14. Also, this is the full sized wet brush, not the mini sized one they also sell.
This appears to be national from the comments but I'm not sure if it applies to other the wet brushes in store, as I only scanned this single one.
Also, if you've never tried a wet brush - give them a go! They're much much better than the Tangle Teezer in my opinion!