Neil:
About £50 on Tzar Boris and his Bear, new in the box from e-bay a couple of years ago.
vulcanologist:
What I’ve just spent on the iron train! Better have a lie down I’m feeling giddy!
Necrotique:
My most spent is now $468 AU on a complete Warhound Titan. Pretty happy with that 
:cheers
Galladorn:
On a single model I fall into the <$300 range (US).
Overall, I have easily spent enough for a down payment on a house here in New York City. And I haen’t stopped buying!
Anonymouse:
Must have been Eu.10,- for a stock HE mage.
After that the BfSP-box.
I’m not really in a situation in which I can permit WH anymore 
Bassman:
My most expensive single miniature ever I bought is… my slave brush entry 
She costed me around 18 Euros 3-4 years ago…
Loki:
Has to be my Elder Revenant Titan with Pulsars which was £178 the one next one would be my Imperial thunderbolt at £80
Necrotique:
Do you have any photos of the Revenant? I’ve always wondered about their size, as they look massive and rather decently priced compared to Warhounds. Do they come with weapon arms?
:cheers
Nebuchandnezzar:
I must admit I have bought a shadow sword kit that I have built and painted, but haven’t actually used in a game
wallacer:
If you include Forgeworld stuff then I guess my FW War Mammoth would be my most expensive figure.