I deliver ALL the photos I take, but only edit a handful fully and I put them in two separate folders. I can spend up to an hour maybe even two on one single photo. I don't have the time and their pockets aren't deep enough to pay me to edit every photo I take fully.
All photos go through basic editing, color balance, exposure, contrast.
Why do I care if the client gets all the photos? They paid me, their just going to sit on my external hard drive anyways. Might as well have someone look at them once or twice.
/rambling
IMO, this is a very bad business practice. Letting images go that are not fully enhanced does two things. (1) It dillutes your brand and enhances the expectation of greater delivery for a given dollar value; and (2) It reduces the consistancy of your portfolio. People see you out because they like a particular aspect or aspects of your work. If your work has a multitude of different looks to it, it's going to confuse clients. Likewise if Suzy comes over to visit Sally, and Sally pulls out the disc with 200 images, only 10% of which are fully enhanced, neither are going to know (or remember) which is which, and Suzy, a potential new client instead of seeing 20 great images is going see (and remember 180 so-so images.
As Over said, you need an agreement/contract; even when I'm doing a TFP for a local MM model, I have an agreement which clearly spells out what she can expect. I reinforce this at the end of the session by explaining exactly what they can expect to receive and about how long it will take. On the rare occasion when they do ask for more, I respond with a polite, "No, I'm sorry, that's all of the images that are available. All others have been deleted."
I disagree with this entirely, but I respect your point of view.
People want quantity more than quality.
If they had to choose between 500 okay photos or 20 good ones, I bet 9/10 times they choose the 100.
The number one question I get asked is how many photos I take. People don't care if you go in and touch up every single hair and clone stuff out. As long as its exposed properly and looks good, they don't care. At least from what I've noticed in the past five years of doing this. Maybe its just my 'area'.
I simply tell people, I pick out my favorite from the sets and edit them fully, and only edit the others for presentable looks (Exposure, contrast, etc) (I don't touch up skin, remove stuff, etc) but they are still presentable.
Just my opinion, if it ain't broke, don't fix it. And its working for me.