So because my regular is leaving me, I've been hot and heavy searching again.  I just had a SB offer to come over for 60......ummmm, should I be worried??  Like she just seems like a freaky young thing but idk..  

She's 18, prob 6.5 on TER, but thin and cute, so my first thought is I'll need to check her ID.  But other than that, I can't figure what the harm is in at least having her come over if she wants to for that?

Meet her somewhere public first. You don’t know if some gorilla pimp is gonna be right behind her at your house.

Agreed. Plus consider the dynamics of how she will get to you. Does she have a car? Is she taking an UBER? Or is she asking you to pick her up?  
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If she needs a ride, than agree to pick her up at a nearby public location, like a Starbucks or fast food store. Park as close to the entrance as possible, with witnesses. Ideally, meet her inside and talk for a few before you decide to go further. Look for tell-tale bad signs: A suspicious guy in the corner that's watching you, she may even make eye contact with him, she keeps looking at her watch, she's in a hurry to leave, she starts to ask too many questions about the money (do you have cash on you? Can we go to your ATM? etc.), she is generally uninterested in who you are and asks almost NO questions about your personal life or motivation for being a SD.... You get the idea.  
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Finally, look for the other potential reality; she's brand new, has low self-esteem, isn't really ready to commit to fucking a wrinkly, old slob like you for cash, and is probably so desperate for cash that she's going WAY outside her comfort zone to get funds. These are the type who will ultimately balk and bail - usually right before (or after!) you drop your Levi's.  Nothing more frustrating than working hard to get an 18 year old sweetie to your pad only to see her bail at the last minute. I'd almost rather get a NCNS. At least then you'll know after 15-30 minutes it ain't gonna happen and you can go to plan B (local pro), or C (your favorite porno)...

Thanks for the thoughts guys.  Turns out she does need a ride, so I'm going to pick her up, and I'm not bringing any cash so I'm fine picking her up at her home if it is her home..  But my guess to be honest is she a low self esteem needs cash type, so yea, I do run the risk of blue balling, but meh, wasn't going to do anything tonight anyway.  I'll update when I can!

And not to toot my horn but I'm actually reasonably fit good looking guy and "only" in my 40s so I feel better in that respect, maybe she is just comfortable with me because I'm cute and I was respectful and all that when talking.  

Certainly in comparison to 55+ year old fat guys like me, you are indeed presumably fit and attractive.  
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But try to see yourself through the eyes of an 18 year old, sexually inexperienced girl. She probably sees her current friends and perhaps some local "college boys" as potential sexual partners. You are probably around the same age as her father, her uncle, etc. Unless she actually DOES have a Daddy fantasy (yes, it happens), you are an OLD guy to her. Even if you are a fairly handsome "old guy" she's still more motivated by your cash than her biologically motivated sexual desires. At least until you prove yourself with DATY skills and such. You're real retention power for SB's, AFTER cash is your ability to give her orgasms that a 18-24 year old guy won't bother to provide.  
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Don't believe me?  Assuming your first BCD goes well, ask her to come back twice a week for free and let me know what happens. :p  
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Good luck on this. We all want you to succeed.

I met a SB who was a potential a year or so ago. She was a hot college student at an elite college, so I was reasonably sure that she over 18. However, over dinner, she admitted that she started sugaring as a high-school girl and under the legal age in her state. She was convincingly legal when we met, but it did make me wonder if I was fooling around with SBs who were jail bait. They do skew very young.

So turns out she is slightly BSC, no shocker there, somehow after multiple discussions about me picking her up and what town I live in where we would be going and how long it took to get there, I arrive and she somehow thinks we are going to have some car fun.  ..huh?  So I guess that's the bad news, good news she does indeed seem legit otherwise, so I might just take the offer here and there.  I didn't this time because I took zero cash with me just in case was something sinister.  

The only reason my current SB and I decided we wouldn't progress to a regular relationship was because I have a child and she wasn't ready to be a mom.   She is 21.  But I get what you're saying.  

and I think you got some VERY BAD advice on this thread. I understand being prepared for bad things to happen, but you have to "plan for success" as well.  

I wouldn't call her BSC (she has to be at least 25 to earn that term for me). She is just a young girl. She may be legal and maybe not even a teen anymore. She is just a teen or a near-teen. If she is so inclined, see her again in several years. Keep in touch if you like; I wouldn't call it grooming unless she seems to be too easily manipulated.

We have had an on again off again relationship for over ten years now, and we did progress to a "regular relationship" for while. She was actually a hooker, that progressed to an SB, and then to a "real GF" and then more of an FWB for the past few years.  

Young and likely never fucked right. And she only wants 60, so she has no clue what the market is like. I would have upped it to 100, 200, or even more if she’s insanely hot. I would have done it on the spot to go to a hotel and then proceed to totally wow her on a date and then in bed.  

Very true, I do regret not bring the money.  I honestly was a little pissed when she said she thought we were car dating cuz I was IMMENSELY clear that was not the case in texts, that I just wanted to get out.  It was most definitely in a bad neighborhood, so I think that swayed me too.  Yup, you're right my man, I shoulda just brought the money and had fun.