I'm sorry if this is in the wrong place, if it is please move it. I am a software developer and my wife is looking to become a wedding photographer and while looking for an online proofing option for her I think I've stumbled onto a business model to allow me to charge hardly any money to host full resolution proofs for people to proof and purchase. I just need to know how many pictures from a proof set on average are purchased by the couple, friends and family. The key to my business is hoping that enough are bought to fund this business and keep it above water. I've run a bunch of numbers over the last week but I need some input from the community. Thanks for the help!