To be fair, If your house is selling instantly then it's probably been undervalued.
Estate agents price for quick sales to benefit them, not the seller.
I see what your saying, but don't agree. I know they area I live in well and know what our house was worth. All the houses in the area I live in are very similar as it's a massive 60's/70's built area. First estate agent said we should ask 170k (under imo), second said 185k (what it sold for and what it was worth imo), third said 200k (way more than it was worth), but if we had been willing to wait ages then somewhere approaching that figure might have been achievable. Demand for un-modified (no dorma) bungalows seems high in York, they seem popular with older people downsizing and first time buyers. 200k gets you a 3 bed semi, ours was a 2 bed bungalow that was nowhere near as good as the houses 200k gets you. As an added bonus we only paid 147k for it 3 years before, so we didn't want to be too greedy. The chance to gazump the lady (first time buyer) who bought ours in the end nearly came up, but there was no way we could have done that to anyone. It seemed greedy and had we been in her situation we would have been devastated.
Dave