What part of your plan isn't being accomplished by P411 and other screening sites.  P411 lists provider availability & schedules, including the "available now" feature.  The site also lists providers who are currently online (which often helps with short-term appts).  
 
  A screening service lists descriptions & photos of the girls, which can be filtered by some of the criteria you mention--location,  price, etc.  A screening service also provides a level of security, something you forgot about. Let's take your business plan to Magic 8 Ball:

 Q:  Will impposter blow his life savings on 'Viceline'.  

 A:  It is certain.  --z

It is an interesting concept, but honestly you can get what you want and need by just following the process.  Channel your inner hunter and look to find P4P friends within your budget and experience range.  Be open to passing on new friends who are just not for you...just like if you go to a bar.  The prettiest or sexiest lady is having a drink...one you would never order as it is pricey.  There are other ladies there that appear more approachable...do you wait to be shafted?  OR have a chance with a great choice...maybe not the shiny penny but certainly more than ok.  

 Negociation prior to meeting is a turn off...haggling over what we will do or not do is not only legally non-adventagious, but also a buzz kill.  There is someone for everyone...take your time to find yours.  Ladies with higher expectations are usually tried and prooved so to speak so your budget may not be as out of control as you think.  150 OMG, I'm running! + 200 bad one + 250 not so bad= 600.  300-400 wonderful 90% of the time is a bargain (and usually safer may I add.) Your call of course...but speaking with men who have went through many ladies that were less than hoped for was not a money saving adventure if that is indeed the issue for you.  They walked out frustrated and underwelmed...instead of the hot thoughts that generated their search.  You may find a diamond in the rough or just rough.

As for last minute requests, I do them selectively...preferably to hobbiests who have been prescreened by me or regulars.  They were interested enough in me to go through the process and maybe even get to know me a little chatting.  Communication is key in getting that "je ne sais quoi" that makes the experience pop for both of us.  If I pop, you are going to pop too!  What happens in the brain is a huge part of sensuality...letting desire build to the moment.  When I am preparing for a friend, I am fantasizing and imagining my time coming.  Such a sexy feeling!

So agreed you need to do some HW before you consider your next business move OR provider selection.  Happy hobbying, folks!!

ot many would think less of the hotel or airline for offering a considerable Internet-accessed price cut to fill empty spaces. Providers are often subject to judgement and speculation in the same scenario.

As a result, we may run the odd special, but the big discounts tend to happen off record and with regulars.  

I understand you think this sounds like a win/win. However, even if our discounted rates weren't readily available to everyone, we would still be vulnerable to a session with a new client who has specifically looked for potential desperation in a provider.

get your hands on Charlie Sheen and you'll go gang busters

It would make booking alot if easier, and a lot of fun too

IF all I wanted were pussy and/or specific acts - this would be a great idea.  But I am really in the market for a good time - it's just that I think that a good time should involve pussy and skilled/motivated pussy at that...

But all that aside....

You can get something like this at an agency - though obviously, not all of them - and your limits are going to be considerably tighter... but, if you really don't care who you see, then an agency might have some choices and price points for you.  Obviously depends on the agency and how well they know you....

You can also use TER to do some of this as well as P411.... the only thing you can't get is a reverse auction.  And... in many places, enough girls run specials that it's almost as good as a reverse auction.

IF it were legal, then I think you would see a site like this.   There's always a market for the low end.  Sort of the Walmart of pussy.    Just because I wouldn't use it does not mean that it wouldn't work;  I don't shop at Walmart either.  But a ton of people do....

As far as investors go - you'd have to be set up off shore and that sort of thing puts me out of your investment pool.... And YES, if your check will clear and the money is right, Bill will do your commercials....

Love the idea and thought about it myself. Steve Jobs didn't ask if we liked the iPad or iPhone and look what happened.  

I would use it and I think there is potential. Yes, due diligence is important. There is mutual benefit for hobbiests and providers, where the $ matter is taken care off and other expectations depending on the filters. It's like a dating site with one extra filter on the $.  

Upside: I would think this will make encounter much more relaxed.

Downside: the encounter could be a little mechanical following the script.  

The one filter for me that will be difficult to ask is the emotional connection. Not everyone will connect no matter the price.

All the best.