Rob has this on his ad. I promise not to waste your time, so please no tire kickers, window shoppers, or pic collectors. I will be more than happy to supply current pics for serious buyers. Thanks. So if you do exactly what he asked you not to do what do you expect?
Being new does not mean you should waste time by negotiating and backing out. Would you go to a car lot negotiate a price and then say I don't have money, I found a different car, my way of payment doesn't work so I need someone else to buy, etc....... The answer is no. It doesn't have to do with being new it has to do with respect for other peoples time. Like Dave said earlier I also sell each snake multiple times a year. I got so sick of it I wholesale the majority of my babies now. I just don't have time to waste hours everyday on people buying that don't actually buy.
Having said all this Rob was a little more blunt then I would be. However I do feel his pain.