It's someplace that I regularly browse, even though I almost never jump at the lowball ladies. I'm always more wary about seeing ladies who advertise there without significant reviews here or somewhere else backing them up; I've had some less-than-perfect experiences with ladies who advertise here, but it's never been awful, unlike a few of my BP experiments. I recognize that there is a premium for ladies who advertise here, and that the likelihood of a good experience is therefore higher, but sometimes I can talk myself into visiting someone whose pictures appeal to me in some special way... IF I am not putting a lot of my budget at risk. I've seen a few of the standard-rate ladies before, and certainly enjoyed it, but I have trouble making myself jump at a date that's going to put me out $500.
Truthfully, my limiting factor for hobbying is available time. If I had unlimited time, I would run up against the limits of my budget pretty fast, but that's not the case right now. My opportunities don't always present themselves on a predictable basis, so sometimes I find myself with an afternoon to kill and nobody lined up. In that case, while I will make a fast pass through the TER Regional Ads board, I'm going to be looking pretty hard at BP.
I expect rates to vary by market. In the DC / Baltimore market, I'm expecting to pay $250 per hour and up for ladies who advertise here, although I have seen occasional specials. For BP ladies, I'm very nervous about seeing anyone who is asking more than $250 without some sort of reviews to back it up, as that seems like a big financial risk. She needs to have something to reassure me that I'm not going to get ripped off to command that rate, too; otherwise I'm expecting something less. I have seen very new ladies who were just getting started, and sometimes that can be phenomenal. It's very hit or miss, but sometimes it works out awesomely. My expectations of $200 or lower depend on how I perceive the lady; if she's just getting started, or there is some other mitigating factor (like I have to drive to Delaware to see her), I still have fairly high expectations, as I have either put in significant effort or taken on significant risk of disappointment. If she's established as a mid- to low-market provider, then I expect that the low rate will be justified either by mediocre to poor performance or some other negative factor (looks or atmosphere), and I am less likely to make the call in the first place.
If a well-known lady were to lower her prices... it would depend on how it was handled. I saw a lady in Dallas who needed to raise a bunch of money in about six weeks to cover a major unexpected expense, and she ran deep specials and saw a lot of guys. She got her money, but kept her rates down near the lowered rates afterward; I don't know if that had to do with poor economic conditions, or something else. I'd wonder about why rates dropped dramatically, but if there were some plausible explanation besides "the phone stopped ringing, and I panicked", that would suffice. For that matter, I've noticed that many of the higher-dollar ladies don't quote rates on BP; they make you call for rates. I assume that if she won't put a rate on her ad that she's either not wanting to scare anyone off with sticker shock, or she's only interested in trying to close the sale while you're on the phone, or she might fiddle the rate depending on her situation at the moment.
If a lady decided to lower her rate, I would think that either listing a medium rate in the ad would work, or just quoting a lower rate when someone calls would be sufficient. I'd worry about a rate that was TOO low -- if a really low rate is quoted (say, $150 per hour), but she posts professional pictures of a very attractive lady, I suspect stolen pics, B&S, or a straight ripoff.