Newby looking to buy mk5 golf gti

[Jams1231]

Hello newby here,just looking for some advice on a mk5 golf gti iam going to buy:
this is the link for it:

 http://www.autotrader.co.uk/classified/advert/201402111726214/sort/locasc/usedcars/quantity-of-doors/5/radius/1500/postcode/pl66dl/model/golf/onesearchad/used%2Cnearlynew%2Cnew/price-to/6000/make/volkswagen/price-from/5500/page/1/fuel-type/petrol?logcode=p

belive il be able to haggle him down to 5500 which is my budget,

any comments/useful information would be ideal cheers