fraid not. bought last March at a bargain price of 317.5k (will be worth 450k when renovations&extension are complete) by using the exact tactics I outlined above. Admittedly when we started out on the search we did behave like suckers, like many of the people I see posting on here, and increased our bids on other houses a few times in response to what we suspected were phantom bids. However, we never bid with the logic 'sure its only a few grand extra' - instead we asked 'how much is the house worth to us?'. We learned a lot through the couple of disappointments we experienced before we found the house we bought, and by the time that sale came around we knew just how to handle estate agents and so I controlled things rather than him say jump and us saying how high.
Admittedly the house needed extensive renovations so competition wasn't as intense as other houses, but we capitalised on them letting us know the owners needed to sell quickly. Rang up and put an offer 10k under the asking, told him it stood till tomorrow lunch and I had a cheque for 5k already made out. He rang back looking for ten grand more, I said absolutely not budging, he said he doubted they'd go for it but theyd think about it overnight. He rang back looking for 5k more to seal it, I said no chance and we were having a second viewing on another house that evening, though if it was to seal it there and then we'd go another 2.5k (we had agreed we would actually go another 10k), but if they weren't happy with this not to bother even ringing me back. Deal done 10 minutes later.
I'm not outlining this for self-congratulation - instead I'm trying to point out to ftb's out there that they need to try take control of the bidding process as much as possible, rather than let the EA think 'yep, I have them in the bag at 388k and they're gagging for it so I'll try every trick I know to get more out of them or someone else, and worst case they'll still be there waiting for me to fall back on that 388k'.
The more solid a stance you take, and the closer you hold your cards to your chest, the less inclined the EA will be to try take you for a fool, and the worst case is that you are actually up against a genuinely competitive bidder, in which case you'll still end up paying an increased amount, but at least then you'll be paying a genuine market price as opposed to a falsely inflated price.