Answers:
1. I don't know because I only ever purchased Premium.
2. It gets negotiated- it's what she is willing to accept, not what she deserves. And if you meet her and don't think she deserves what was negotiated, you move on. This is pretty simple.
3. This varies, the one I am seeing now isn't too experienced so I call it noobie sex- BUT, she takes direction well, and when a girl takes direction well, generally she will get better.
4. Nothing at all- this is a completely useless endeavor and waste of energy, because a girl will do what she wants regardless, and if you try and possessively control her, most girls will quickly drop you. It can be presumed they see others. Exclusivity is irrelevant but if you really, really want monogamy, get married and quit the hobby. Most common statement made in SB profiles on SA: "nothing serious."
5. I text her only when ready to see her next time, with rare exceptions. Most SBs don't appreciate needy and clingy guys and some even say so in their profiles. It's a 2 way street, I tell girls I don't need to be texted all the time and it's understood until the next date we both go back to our private lives. That kind of preserves the nature of the arrangement as most ladies aren't looking for relationships and are leery of SDs who are, in my experience.