I assume from the number they had out its a national thing, but not available online. (It's only 25% off online making it 29.99)
I Just picked one of these up from the Sheffield Crystal Peaks store, they have about 20 in stock.. (some on the clearance section at the bottom of aisle 36 and some with the tools further up the same aisle)
Reduced from 39.99 apparently.. which seems overpriced, but at 14.99 seems a decent buy. I bought it to replace my cheapo screwfix one where the crappy guard prevents it cutting anywhere near 90 degrees.
450W with pretty decent variable trigger control, supplied with 1 blade.
Best price online hovers around £27 so not a bad deal I thought, even just as a spare.
Specs at B&D Website: http://www.blackanddecker.co.uk/powertools/productdetails/catno/KS600E/