She has profiles on both SA and WhatsYourPrice. I offered her 100 for a M&G on WYP and she turned me down. I then messaged her on SA. She was nice enough to reply back to tell me she was offered 1K for a M&G. LMAO. Either she is full of BS or these guys are out of their mind. I will let you be the judge (check out her profile). A 37-year-old MILF? I doubt it. I went out on a M&G with a POT SB a few weeks ago who wanted 1K per meet (at least BCD is included). Of course, she told me some BS story that she was getting 4K a month for weekly meets, but the guy became too clingy so she had to stop the arrangement. Sometimes, I just chuckle at the stories they tell me. Seriously, DC is getting more and more expensive. It is very hard to find a TER 8 for less than 400 (I am talking the vincinity of the city, not Baltimore or some boondocks places in MD and VA).

Anyone can offer a fake amount of money!  You are correct she is insane, also Ashburn is in the middle of fucking nowhere.  She is lucky if she can get $200.

I had a nurse...I verified her...tell me she'd had a regular SD who gave her 600-700 for each BCD meetings  
After a couple emails she offered less than half of that.

Number one, don't pay for M&G. Ever. The precedent should always be, the money comes when we're BCD and at least mostly naked.

Many have a very bad GPS affliction.

Actually I took her and her GF out to dinner for our initial M&G, no biggie the extra few bucks for dinner was irrelevant.  After dinner she agreed to drop off her friend and then come back to my place for some BCD fun. No money was discussed at the time.

Even if someone is getting $1000/hour they don't necessarily get it very often.  Therefore your offer of $150 is better than zero for the empty slot.  

Has all the hallmarks of a really bad experience.  
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Her profile name tells you she's divorced from a doctor. That means she's used to her man being at work for long hours while she has all his credit cards. It also tells you she probably got significant funds from the settlement, including alimony and child care.  
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Says she has "some college" and "works for a corporation". Who doesn't? She does not say what role, level or industry. So that could mean anything from making fries at Burger King to sweeping up at Supercuts to answering the phones at a law office, etc.  
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Tag line says she's looking to meet someone "new" or "couples". That means she not looking for a SD, she's looking to whore herself out to lots of people to maximize her cash flow. It also means she's bi, which could be good, but...
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Her relationship status is "open relationship". That's a red flag as she doesn't say if its with a guy or girl and she doesn't say if her "other" knows, or if her other will be participating. I'm not down for having my SB's BF watch my ass bobbing up and down over her pussy, let alone the idea he may want to peg me in the process!  
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She has a single face pic, close up with sunglasses, with no real way to determine her general body shape. She says "average" body type but that could mean anything, and with pic like this, it usually means bigger than "avervage".  Plus there's no easy way to tell from her pic if she is anywhere close to her stated age of 37.  By my judgement she could be as old as 45-48.  
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She "pefers not to say" if she has kids. So over 35 plus divoced means kids. Not "kid", "kids". Side note: Perhaps she has an 18-20-ish hot daughter?? But probably not.  
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Now for the GPS Bluff (and yes, it's a bluff). She says she's had affairs with senators, lobbyists, lawyers, etc.  So now we know why she's divorced. And claiming to have fucked (not dated, fucked) people in the DC area who definitley DO NOT want others to know about her means if you are one of those types your secret, descrete affiar with her will be anything but! Or she's just lying to make a "regular" guy think he's gotta step up with big $$$$ to even get her attention, let alone access to her pussy.  
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Last, she's also on WYP. I assume her WYP profile has lots, if not all of the "type of dating" boxes checked. That will ensure she gets listed in as many search results as possible with local guys. Then these guys are pushed to offer above market amounts to get a M&G with her.  
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Conclusion: She is a professional dater. She's optimizing to get one or maybe two non-sex dates a day from as many guys as she can. She will never fuck any of them... unless they actaully are stupid, lonely, horny, and of course, really, really, really rich.

Let's all ise our well-developed, mature faculties to discern a risky waste like this one, from more rewarding options, of which there are many...
Careful observation would save much $$ and effort, consistently applied!

I asked her in what part of town she lived, and she responded with a long dissertation on how she was looking for long-term, blah, blah, blah, and for our first meet she’d aske for $1G. She didn’t answer the question, which IMHO is a big red flag. I turned her down and wished her well. We’ll see if anything follows.

I use the econ 101 theory of supply and demand.  There is an abundant of MILF's in my neck of the woods and had a few want $800 to $1k per meet.  When I tell them it's too much and no thanks, they lower their price.  Patience grasshopper!

When they go super high off the bat, sometimes I play along and say "normally I go between $10,000 and $15,000 for a platonic meet and greet... They don't even know that I'm fucking with them - It's crazy...

You go in and see a nice little jade statuette and look at the price tag - $15,000!   No thank you.

LOL!