El Payaso said:
"What are the signs of a low value woman?"
It doesn't work that way. If it did, then it would work on low value men, and you could tell women why they shouldn't sleep with that guy they like, and they would listen.
Attraction is not a choice. We meet someone and our chemistry reacts, and we form an opinion. The key to seducing HB8+ women is to have them form a good first opinion of you. As Doc Love said, don't project your interest level, maximize hers. This especially works if they are with their friends when they meet you. Then you will be "that guy they like" instead of "that guy". Your opinion of her means little beyond "can you get it up?".
The way a woman treats you is based on her attraction to you. If she is highly attracted, she will do everything right. A raunchy hooker who is highly attracted to you will act like a princess. Likewise, a princess who is not attracted to you will act like a raunchy hooker.
That said, her physical health, youth, and fertility (and lack of criminal background) are the main signs of what a quality woman she is. Women are machines to have sex and families with, they are not your buddies. They have always needed a man to take care of them and keep them straight and they always tended to give in to temptation. Just have options and you won't care (unless you have kids, where you better be sure they are yours). Tattoos and smoking are two serious warning signs. Also watch out for self mutilation, which seems remarkably common (arm scarring, etc), and abusive exes.