"Hi, thanks for your interest. I do have a pricing model that works the way you like, it's called a 'spec' shoot, where I show up to shoot an event, and the client only pays for the images they like. I have to warn you though, that due to the additional risk, the image prices are roughly 5x the pre-paid engagement price. Depending on how many of the images you like, it could get very expensive for you to do it this way, as, for example, single digital images under this format are $995 a piece. Please let me know which billing plan you would like to work under, and I will make the appropriate adjustments to your expectations with regard to your expected spend. Thanks again for your interest!"
So, yes, we can do it your way, you are just not going to get a deal if we do.

As if that'll work. They'll just agree to this "spec" shoot and not buy anything. You still have expenses to actually do the shoot so you end up screwing yourself without even realizing it. Spec is for when there are a ton of potential customers at an event they have a vested emotional attachment to. It's not for planning, scheduling, and executing an individual boutique session.

