In reply to Duncan Beard: As others have said, Vertiges are decent axes. I've still got mine and did my hardest lead (grade VI mixed) with them.
Whilst they are still a good axe for moderately hard mixed climbing, they are fairly poor on ice compared to modern curved and leashless designs. However, as with most older tools, worthwhile modifications are possible to allow leashless climbing. I added some Grivel triggers to my pair and it made a world of difference allowing me to happily use them on grade V ice routes like Smith's Route and Indicator Wall as recently as 2010.
I haven't used them this season but I used them last Winter on Tower Ridge to save the picks on my then still very new Quarks.
If you can get an axe for about £30 I'd go for it. If not I'd look at trying to pick up something slightly newer for £100 for the pair (and modifying them for leashless use). Older axes with hardly any use will be much better investment than newer ones with overly blunt picks. For example, DMM Aliens and Predators are still surprisingly usable. I'd probably avoid Stubia Hornets and HB Tornado & Hurricane but most Grivel or Charlet Moser tools from the last 20 years would be worth considering.