I love car auctions, i sold my old MK2 Polo (piece of sh*t) and went to my first auction with my dad who strictly told me that the first rule of car auctions is to never have any cash on you!
I went down with him, wondered about, the usual ex-police vehicles and Vauxhalls

and generally cars i either didn't want or couldnt insure.. Then.. something caught my eye - :O a MK1 Golf!!!
I went over gave it a good check over (as much as you can without looking at the engine / inside), I took some photos went back home, did some research on what to look for and went back when the auction began.. She sounded abit rough, the exhaust was blowing ever so slightly.. but other than that looked gooorgeous!
She drove in fine, several "traders" told me not to buy it as it sounded like the head gasket was gone because of the blowing from the exhaust.. - funnily enough they were bidding on it..
I bid at the last moment and got it for just under a monkey

Includnig a years mot & tax, respray, smoothed, debadged, loads of mods - tastefully done & no rust

Turns out the manifold had a few holes in that was all.. (my recommendation.. go once with no cash & no wallet, go research, go twice..). Set yourself a price you're willing to pay - then knock 10-15% off that price and see if you can get it for that. - I was willing to pay £700 for it (i was skint), but i agreed with my dad to set myself only £550. - I got it for less than that.
My dad picked up a 2005 Volvo V70 Estate 2.5T with full leather interior in mint condition, full service history with 23,000 mileage for £1400 :O
Deallll!