Sometimes, buyers don't know what they want, and they ask for the seller's advice on the matter. Some sellers are happy to advise their buyers, while others offer consultations as a separate service, and suggest to the buyer to purchase it (some buyers do it, and some believe that they're entitled to free endless consultations).
Me, I state in the gig description or FAQ that I don't offer ideas/advice/consultations/suggestions.
Why?
Because it's a hassle, and the kind of hassle that often leads to unpaid work. In my experience, it's not that buyers don't like my advice; they love it, but because they'd entered the whole thing without knowing exactly what they want, they change their mind, and they usually do it after I have delivered the work. And then? Then they ask me to redo it from scratch, and refuse to pay for additional work. Because, hey, they have already paid for the script, and they have a revision available (never mind the fact that a new script can't be a revision).
Could I simply redeliver the same work, explain to the buyer that, if they want a new script, they have to purchase it first, and risk a bad review? Certainly; with my current rating, one bad review wouldn't change things. However, it would still be a hassle, and with my prices, that kind of hassle is neither worth my time, nor does it help the buyer. Actually, even if my prices were higher, dealing with undecided people who keep changing their mind would be too much of a headache; they still wouldn't know what they want, and they would still be unhappy with whatever I send them, no matter how many times I modify it.
It's much more efficient to work only with those who know what they want, so that's what I do. On top of that, the questions and explanations I send to the potential buyers before I tell them that we're not a good match (because I don't offer consultations) sometimes actually help them realize that they're not ready yet to place an order, and that they still need to think things through before they can get something that would help them and something they will love. Will they get it from me? Probably not, but, hey, I've helped them, and I've avoided something that neither the buyer nor yours truly would enjoy.