I’m a couple years into this hobby and  it dawned on me that I don’t know what is expected of me for tipping.  
On a normal visit my envelope usually will have an extra 20 in it but unless they’ve really put out so to speak I never tipped.  
Over the last few months though I had MistressX really fuck the hell out of me, ended up BBFS with anal and 2 pops and at the end I was wrecked. I dropped an extra 120 at the end. Same with Ari, she really went all out to get me off 2xs I gave her an extra 100 and she was super appreciative walking me out.  
So what is protocol? Have I been pissing girls off that didn’t get a tip at the end just the standard aggressive price?

Like you I am somewhere in between. I don't always tip and I almost never tip for "average" service, even though average service is still pretty good in the K-Girl world.

If I was super rich I would tip most visits. As it stands, I need that money more than the girls do. 300 a week adds up quick and I think the amount paid is fair.

Outside of the pay for play world, a tip is pretty clear.   You get a service like a cab ride.  You know that tipping is considered proper if you got decent service, so you tip.  It the driver does anything above and beyond the call of duty like helping you with bags, etc., you tip more.

I never tip; I put it in all the way, balls deep!

I agree with you about tipping cabbies, Uber drivers, waiters, etc. Those folks earn a low hourly wage and depend on tips for their real income. Same with masseuses who charge $80 - $100 per hour and who aren't escorts or who don't offer "extras" for a tip. But, when I'm seeing an escort I'm often paying $300 and up per hour. That rate more closely resembles the hourly rate I pay to the professionals in my life, such as my lawyers, accountants, medical professionals, stock brokers, etc.  And I would never think of tipping them (and as an aside I've been a lawyer for nearly 40 years and never received a tip from a client; a XMAS gift occasionally, yes; but a monetary tip or bonus, no).  So my practice has never been to tip except in the rare situation where a lady absolutely knocks my socks off, and then I have left a little extra. And like GaG mentioned above, when seeing providers who charge $260 or $280 I'll generally leave $300 rather than asking for change.

I use to round up to 280 but now I go to 300.  Bet there are a few who will ask if the provider got a 10 in her purse. LOL

every 6 months I tip the booker and it has helped for me.

Use to give a Xmas gift card to my #1 booker of nearly 10 years but she said its not necessary/

How do you tip the booker just curious

Just give the tip to the kgirl and she will pass it on.  I usually let the booker know that its on its way.

How much do you generally til the Booker/PO?

I don't see any real reason to tip in this setting. A few reasons. First, as others have pointed out, the rates here are not those for where tipping is the primary source of income as with wait staff, valet services and other low wage, service related jobs.

“Korea is not really a tipping culture”... I found out.
Went out with one of the girls recently (outside dining) and after we got our food I left a tip and she gave me a look like “why tip?” I usually tip 20-50 bucks depending on the service. If the service was meh, I won’t leave anything. But I have a regular rotation and I get great service and leave the same tip. And they always seemed surprised (or great acting like when they fake the orgasms ).

I have "tipped" many professionals for a "job well done" including an attorney. He did a particularly good job for me and after I settled up with him I gave him an extra $500 and told him to take his wife out to dinner "on me" He certainly didn't expect it, but he didn't turn it down and he was one lawyer who ALWAYS returned my call afterwards. lol  

HOLY SHIT that is badass GaG, can you give us any more details? What type of case was this? Divorce? Business? Criminal?

Lawyers are lousy businessmen.

who always tip.  Here's why . . . . If a Kgirl rate is $280 (average in SoCal right now), the girl gets $180 and the house gets $100.  (Booker is paid out of the "house" portion).  So I'm getting an hour's service out of a girl who is getting only $180 for arguably better service than I have gotten from my indies who work from their residence and charge $4-500 for an hour, and they keep  all of the it because there is no "house" fee to the agency.  I feel that a 20-33% tip is in line with what I pay for other personal services.  In the BA, at the long-standing rate of $220, the split is usually $150/$70.  That's why so many BA girls are touring to SoCal these days.  They make an average of $30 an hour more than they do in the BA.  BA mongers who want to keep the top girls they have should be tipping to make up the difference for these girls so they don't leave.  

Hey CDL, do the bookers get $100 per session or $100 per hour, if it's multiple hours? Kind of wondered about the breakdown.

again.  The $100 is the "house" fee, not the booker fee.  The house pays the booker from these proceeds.  The booker's cut varies by different geographic areas of the country.  

Bringing up things like “bookers love two-hour customers” is going to get those org conspiracy theorists raving about the mythical VIP monger!

For someone who claims you want to ignore me, you sure think of me a lot, beloved.

Most countries in the world don't have a tipping culture. Tipping in most places is considered a sign of an "above and beyond" exceptional service.