Click link.

I am wondering what the "donation" term exactly means when hiring an escort service. I have heard that this is just a payment for be with the provider, and you have to pay extra depending on what you want to do with her, meaning having sex relations or anything else. Is this true? Because they usually charge $400-$800 as "donation", then a client has to pay more for eating the menu?

Thanks

You are not 'paying' for anything
You are simply donating for time and companionship

The donation is all inclusive except perhaps for Greek where there is often an extra charge (& extra prep) if she even offers it.   Extra charges are considered "upselling" & is reviewed poorly.  After you have read the self-help manual & read back several pages on this board, you may want to try this hobby out.  At that point, you need VIP to read the actually reviews (presence of reviews does not establish that they are GOOD reviews or that she offers what you want.)   As a Newbie you should see only well reviewed providers...  that do not upsell.  
skb

provider to be one who does not (what we call) upsell. That is, get you in the door with the base fee, and then sell "extras" for everything else. Very few "services" are considered acceptable as upsells.

Not sure where you're seeing $400-$800 as a base donation with upsells...

I understand now. And yes, I'm newbie. I was confused because some websites of these providers stated donation $600h, but it was confusing to see other reviews where they were charged extra. I mean they paid donation + extra, what you call upselling. I understand now. Thanks for your help.

Btw, where can I find that self-help manual you pointed out?

Don't be fooled by bad legal advice: Merely calling an obvious "payment" a "donation" won't shield you from a law enforcement bust.  Three tips for avoiding problems:

(1) Pay the beautiful woman UP FRONT and without any mention of sex or sexual contact whatsoever.  Pay her for her time and agree upon how much time you're going to spend with her in advance.  Take her to dinner or at least buy her a drink-- like you would dating any beautiful woman.  If you pay her after sex (or-- worse-- pay her an INCREASED amount after sex), it looks like you are paying her for sex.  That's illegal no matter what you call it.

(2) Never mention sex or sexual contact when communicating with a beautiful woman.  Don't talk about it by phone, don't talk about it by text message, and sure as hell don't talk about it via email.  The only time you should be talking about sex is when she has her tongue down your throat or the two of you are naked in bed.  Don't rely upon code words to shield you.  If you ask a cop decoy if she allows "BBBJ," she won't need a masters degree in cryptography to figure out what you're asking.  Neither will the judge who sentences you.

(3) Stay away from 15-minute and 30-minute incall appointments.  If it's a setup, it will be awfully difficult for you to explain what you are doing in a foreign hotel at 11pm after you've already made an appointment with a decoy and the cops find you with $100 in your pocket.  If you ever need to be reminded of this, watch any of those awful Dateline specials where the predatory idiots show up to the homes in the suburbs and to the pre-arranged sting operations hoping they're going to get some 12yo piece of ass.  The pedos always deny what's going on and then there is that jackass from NBC with a list of all of the emails and text messages the pedos sent to the little girls on AOL.  Think about it: When an escort comes to your hotel room, you control the environment and can be sure there are no cameras, wires, or doughnut crumbs.  If a decoy or the cops show up instead, you have plausible deniability: "How can I help you officer?  Sorry, I don't have a fucking clue what you are talking about.  Maybe you've got the wrong room?  You're the second person to stop by.  Weird."