First off - I'm always skeptical of SP's "Sales" because they have already have reduced pipes based on the MRSP - so they've already discounted the pipes as their "regular" prices.
Same goes for they great discount on the 10 tins from Dunhill. They advertised they were close to 50% off but they've already sell the tins for $9 and the 10 tins work out to $7.50 - so really it's only 20% their "regular" price.