Don't depend on the agent to get you the best price. You might think they work for you, but only to an extent... why?
Here's why.
Lets say their commission is 1.25% (average, yours might be lower or higher). Lets say your property is worth approximately £200k. So that's £2,500 commission, approximately.
How, lets say that you really could get £220k, as there are buyers out there that would sooner or later offer this. And the agents will know this, they pricing of the market very well. But you get an from an early viewer for £200k. You would expect the agent to tell you to wait out for a few weeks or months, an offer of £220k will come.
But they only get their commission when its sold. So their whole incentive is to agree a sale, if the price is not too bad.
If they convince you to take the £200k offer, then their £2,500 commission is one big step closer to being in their bank account.
If they ask you to wait for £220k, what do they gain? Another 1.25% of £20k... that's £250.
For £250, do you think they'll risk waiting a few more weeks or months, having to do lots more house viewings and wasting their time?
Meanwhile you would have left £19,750 on the table!
So the moral of the story is, don't depend on the agents to look out for you in terms of getting the best price. Do your own research, have your own number in your mind. Only you will look out for you, in this business transaction.