I have been re-thinking my pricing strategy and the following will apply from January 2010:
You will pay a fixed amount at the time of your session and this price will include a set of the best photographs resulting from your session.
You will then have the opportunity of buying additional copies and enlargements for a special low price.
The advantage from my point of view, is that I will no longer have wasted time processing pictures that you may like, but do not want to spend extra on, as they are not your absolute favourites. Now they will all be included in the price.
You no longer have to worry about deadlines or finding the time to choose your favourite pictures. You will automatically receive a set of prints and, having seen the finished photographs, hopefully you will find it easy to see whether you would like to order any copies.