I just bought a 2004 car, things I am paying out for now...
- CV Joint, clicky problem as mentioned before, rear axle clanks as the car pulls away or goes into reverse. Expect to pay £300ish from Alex on here for a replacement.
- Clutch has gone on mine at 44k miles, looking at £600 in replacement parts again from Alex.
Also as mentioned on the site, check for failed windows. For that money as well you should be looking at Rays Alloys (they are 6 spoke forged alloys - they look more curved than the ones on your link, much better than the 6 spoke on your link). Noticed that the link you supplied the guy had not put the mileage down?
Just make sure as well that there is a fully Nissan serviced stamped book, there are links on this site showing when and what services it should have had to date you can reference to.
Also, I would check the recommendations from the previous MoT, things like tyres or exhaust problems.