Thanks for all the input and insight. This is why I'm glad I found BP. Different points of view from different people is much appreciated.
I do feel it would be better to let the seller know what I'm doing. In this case the seller contacted me from an online ad. My screening process, which was my google voice message to the seller when they call, was not set up correctly when he called. All I could go on was a missed and I called him back to speak with him personally. Being that I just started started my education process about wholesaling on july 24th, my knowledge and confidence was shaky at 1st. None the less I called him and began the process, because I wanted to take action regardless of knowing what I was doing or not.
Looking back on saturday and after all the informational comments I received in this thread, I wish I had handled it differently. I guess I was more upset that I drove all that way just for the guy to call me 23 minutes past our appointment time, to tell me they changed their mind about selling. I felt they wasted my time and I really lost interest in seeing the house at that point. I have learned from this experience and from you all here. Thanks again all your input. Now I just need some deals!