The Eye portal price survey has already achieved a level of participation far in excess of expectation.

Before launching the survey last week, we anticipated receiving something around 500 responses in total, but to date we have achieved 1,000 and there is still more than a week to go.

Eye managing director Nick Salmon said he is delighted with the progress of the survey.

He said: “It just goes to show that there is an eager appetite to have some light shed on the generally opaque pricing structure of the major portals.

“I urge all agents to complete the survey, which ultimately will help us to help you.”

By the end of the first week of December we expect to be able to bring Eye readers the survey findings.

Analysis of the data from such a statistically significant quantity of replies should enable us to give reasonably accurate guidance on just how much agencies of varying sizes are paying to list their properties.

Already we can see that the figures are widely divergent.

We will also be finding out the proportion of the responding agents who have signed up to OnTheMarket, and to report the percentage who say they will be leaving either Rightmove or Zoopla, or of course, other portals.

Coming at a time when the portals are so much a topic of the moment, and at something of a crossroads in their evolution, the Eye survey results will help agents make decisions about their future portal strategy – and the more of you who complete the survey, the more informative the results will be.

We are really grateful for your help.

You can take the two minute survey here