Whenever she wants.

leaving the client stuck with a hotel room, or just wasted opportunity.

Otherwise, if the provider wants to offer a little "customer appreciation" discount, that is totally up to her, and I would be most delighted to be so honored myself

BOGO.... or

...a little punch card that when the 10th one gets punched it's free ? Like the car wash or barber shop ? I'm liking this idea...

I've had an agency waive their fee one time and several providers have given discounts for Veterans Day etc. so my answer is Maybe... Sure

We establish points and every 1000
Points we get a discount  

Ive had free sessions and the suck

I made a date through a very reputable agency with whom I had worked for a year or two.  The woman who ran the agency knew my age (late 60s then).  The date was with a young provider (20ish) and was TERRIBLE.  She simply had a lousy time and it showed; absolutely no connection real or simulated.  After the date I called the agency and politely complained or, perhaps I should say, reported.  The owner immediately apologized.  She said she knew that the girl did not like older men and she should never have allowed me to make the date.  She offered me a free do-over.  On the second try a good time was had by all.

Sadly, the agency is no longer operational. I have great respect for the lady who ran it.  

I think this qualifies as a valid reason for a freebie.

each woman considers each client on an individual basis.   i wouldn't call them discounts, but i know i give a donation specific to me and no other client to more than one provider i see.  there is one lady i have seen for more than 4 years who still asks for her original donation from when we first met, while having raised rates on other gents.  i recently got a really nice break on a dinner date, not only was the lady's requested donation for me lower than her posted rate, we were together for about 2 hours longer than the original contract was made for, and not a peep was said about it by her, tho several moans and a few oh gods yes yes right there yes! were heard.

why yes, i'm hung like a rhino, thanks for asking.

but seriously, it's like any other business that is not franchised or corporate:  if you feel like giving a break would be good for return business, why not?  or hey, if you just enjoy the guy and want to throw a little love his way in the form of a discount to say thanks for being a good customer, that's good business sense.

and if not, no big whoop.  

just my 2 cents.

If a provider wants to do that for a client go ahead.

It should be done for your loyal clients.
I have given some providers gifts in the past and have received extra time too.
So it's all about chemistry between the two parties.

Client Discount.

When I see a provider on a regular basis I can usually get a pretty good discount after about a couple of months. .

Foxy Roxy, for regulars I know that providers do give discounts to them all the time to retain their client base.
Also Roxanne, it is commonplace to give discounts during the summertime and other times when it is typically slow to induce business as well.  Complimentary sessions could be on the client's birthday or an occasion if a girl had a reason to cancel unexpectedly.  But it does happen more than you think.

...her friend is available. Maybe a freebie is a bit much, but a discount would be in order.