dear professional financial advisors of DiS (or any bored office person with an opinion).

Is there a way I can work out what value house/flat I can potentially afford? I'm a bit vague on it, but here are the facts as they stand:

I don't want to pay more than £600pcm mortgage
I will have a fairly decent, but as yet unspecified deposit (inheritance from a house being sold, but that's got to be sold first, and the money split a few ways)

from that info, can I work out 'ok, if I have x deposit, I can afford a flat which costs x if I pay the mortgage off over x years'?

I keep looking wistfully in estate agents windows, but I have no ideas which ones I might one day be able to afford to live in.