It usually means the provider is a ripped off.Those providers will ask for alot more after you pay.They start low to get you their then once you pay the money they say it will cost more for full service or just a quick bj or hj.Go with provider that state total cost.Just read the reviews on this board you will find many providers to chose from.

I don't see them.

It depends on who it is and where you see it.  It may be a legitimate provider that doesn't want to detail out all the fees and all the appointment lengths on their website.  They may be trying to be fair by acknowledging that blindfolded underwater greek just might be extra.  If it's clarified over the phone/e-mail based on your requests, you may be okay.  Then again, it could be an upcharge deal.  Either way, the only way to know is to check the reviews, and read/listen carefully to initial conversations with the provider for warning signs.

Ya never know what is going to happen when you get there.  The negotiating is the down side of this hobby.  Its nice to know what you get and what it costs.  Its almost impossible to determine all that on email or phone so you are left up to chances of up charge.  Of course unless you have seen good reviews, you dont know what service is going to be provided even if the price is firm.  Our good reliable local ladies are the safest bet.