Goldie said:
Harry Hall's in Manchester would happily have half a grand off me for one.

I spent double that.......

(CTW scheme)...
Pros - bugger all maintenance compared to a geared bike...(from someone who does lots of maintenance/cleaning), good training, can climb better than a similar gear on a road bike (limitations though where I live due to gradients), mine looks like a road bike, not a 'fixie'....so lack street cred, but who cares.
Cons...no gears....may have to pick routes..... ahem but the CC fixie ride in March wasn't flat was it folks.....
Parts wise in a year....
2 chains, 1 sprocket, 2 sets pads, 1 rear wheel rim/re-build (I still brake with the rear/also hit a pot hole) and a new tyre...., 1 set rear bearings that's it....
Cost per part.... £89 for rim/spokes and rebuild, tyre £35, sprocket £15 (ish), pads £14 set, chain £13, bearings £5.