I highly dislike seeing these posts. They typically can be found in Facebook yard sale groups. I do appreciate those who tag me. First, if you are asking for cheap photography more than likely you are going to get just that. And what I mean is cheap looking photography. You may be lucky and get a cheap price w/ nice quality photography. But then they go and "edit" THE hell out of the images! Some of the "editing" that is done makes me cringe! The photographer may be charging cheaply to build their photography portfolio, and that is fine, I had to do it myself. Now remember, I am not perfect but I do know and have learned a lot about photography from all different aspects from professional photographers.
You ask why you have to pay so much for photos you can refer to my previous blog post, Your prices are what? Just remember what you ask for is probably what you're going to get.
Just take a look at the website You Are Not a Photographer. You don't want to end up on that website!