I've kept an eye on a couple recently and they've been around the £40 posted mark but you then have to buy the non return valve that screws in the end and the hose with the valve adapter, all in all another £40 on top and you can only use it on Rammers (or Brocock cartridges), you can buy a new hand pump from Best fittings for £85, if I get the stirrup pump for £30ish then all I've got to add is the valve adapter for £23 and I can use the stirrup pump for the rammer and a PCP if I ever get another one.
Pete