Question on buying etiquette

I decided I forgot two points. 1) Don't ask for a huge discount and a payment plan...for me, as a seller, you get one or the other. 2) S a buyer, if I find an animal I just have to have ( like a jaw dropping example of a morph I've been hunting for for a while) I don't even try to negotiate. I assume that most breeders are going to sell to the person who pays first, so my goal is to get the animal paid for right away (of course, this is when I'm dealing with somebody reputable and when I don't need any questions answered).