Joanne,
I have only ever bought one property at auction: so my experience is limited. However, as with any other business I started by asking myself a few questions:
· Define value.
· Define worth.
· How much am I prepared to pay for the property?
· Does my total budget take into account any building, decorating, refurbishment costs?
· Have all the essential finances been readied in principal?
This worked for me. If you know the area you are buying in, then as locals any direct questions you have (local shopkeepers are excellent for this).
Regarding bidding: I was told to be slow in my bidding and wait for the trend-setters to show themselves. This allows you to observe the price increase, if any, and also to potentially see your opponents. It also means you are not contributing to the price increase. When all is said and done, the bidding is slowing: place your bid. I found this useful as it meant I could judge the opponents voracity.
Hope it help, and good luck!
Regards, Malik