Above, with the Salami, I was joking......but this is straight up.
I have personally met girls that want to sell their cooch, and forget being honest about it to a potential buyer, aren't even honest about it to themselves.
I have met a girl a club, that had a few drinks, blew me in the car, and then asked to borrow a few dollars. Non-pro, fallen on hard times? Most likely, as any pro would want cash up front (unless they really knew and trusted you).
Also met a girl, at a small local bar, was introduced by a mutual friend, and ended up back at my apartment, both sorta drunk. (This is obviously before I was married) We fooled around to the extent of heavy kissing and grouping, but when i hauled out junior, and started navigating her mouth towards my stiffie, she asked me "What's it worth to you?" I was floored and upset. I have nothing against paying for it (or I don't think I would be here), but I was taken by surprise.
I offered to just take her home, with a rather snide comment along the lines of "If I am paying you, I want a lot more then head." I think she felt really bad, and serviced junior quite well, before I took her home.
Next morning, i called to see how she how was, being the non-judgmental type of guy I am (she also sucked a mean dick, I think that also was why I called). She tearfully thanked me for calling, thinking I never would. She explained that she had dabbled as a sex worker in the past, but was no pro. I ended up dating her for a few months, and WOW, did she have an oral fetish...this girl would suck me on and off all night, and got more pops out of me then I thought possible, all as a girlfriend, NP4P, except the cost to take her out to dinner and a few drinks (like we all pay). It actually took some work to finally get some pussy, but i did. We double dated, and i found out she snuck out with her best friend's BF, and blew him (told you she had a fetish). Well, I kept junior in check for her, and expected the same, and her friend wasn't too happy either, so i dumped her and dated two of her friends.