You may delete (or edit) any post for up to 24 hrs. after it was posted. After 24 hrs., if you want to make additional or corrective statements, you’ll need to do this in an additional post.
A forum of this nature where information is submitted, and others, (sometimes many others) provide their time and expertise and to respond, is intended to be present for the long haul. This provides value for many, well into the future.
As such, think before you write. Realize that you are posting information to the public, thus do not include any information whatsoever that you would not be happy for anyone - including those you may in fact be a counter party in negotiations - to see.