Hi Chrysanthamum
We knew which type of house/area we wanted to buy in and kept an eye out for sale/auction boards. Our local paper also has an auction listing every week - mainly antiques etc but also when property auctions are coming up. Usually local estate agents who specialise in auctions have upcoming sales on their websites.
We bought a house that needed work but was priced to reflect that. We basically worked out what needed spending to bring it up to standard plus 10% contingency (it needed d/glazing, new kitchen, damp proofing course, and general cosmetic work - and we had block paved parking)and then set a limit .
We bought at the first auction we went to.( I had spent a lot of time watching Homes Under the Hammer whilst on maternity leave!)
I would certainly go to a couple of auctions just to get a feel of prices (as it is a different market to when we bought at auction).
If you have a specific type of house in a set area that you want to move to, you will have already checked actual sales - so an estimated auction price will give you a starting point - it's then up to you !
My mum's friend bought a house at auction a month ago - she had all the finance in place just in case - but she had expected that a lot of people would be bidding. Not the case and she got it at a couple of grand over the reserve. I know this is because people are very nervous at this moment in time- and I don't know what the market is like in your area stagnant/static/prices still falling?
Hope this helps