OP's post was innocent enough. I honestly would not have even guessed this person charges $4800 for what she does. I know she's been active for a few years but I assumed it was like...many hundreds at most. She must be making bank though. She probably sends students nearly identical resources initially and the bulk of her time is spent reading essays. But it also says she has a 'team' so might even be farming that stuff out to people?
I'd also want to know if she caps how many applicants she takes on. My guess is no, but for how much time it takes to adequately proofread even one application/essay, either she's got a big team or her services are not as personal as she's making them seem. I did one essay for one of our SDN people this past cycle and it was a few weeks of back and forth. Not that I think you need to pay for that obvi, but the essay part is the biggest time suck