Seriously though, it's cos I'm a habitual cycling-gadget purchaser (one look at my bike confirms this), and decided that another one of the topeak pumps was more suited to my needs (I ended up with a master blaster road thing which is still small, tucks away on the frame of the bike between rear wheel and seatpost, but has integral pressure gauge).
So, I'm selling off the original one (and the gauge, though that's already been sold!), so someone else can make use of what is an excellent small yet road-pressure capable pump!