I would like to find out how to change the amount of money that I posted on the house I have for
sale. Also I would like to delete the older post of mine. Thank you

All you have to do is post another add with the new price. You can type a complete post or you can copy and paste one of your old adds and change the price. I can move any or all of the 3 posts that you have already put up. What do you want to do?