If there is a companion that you are specifically interested in, wait until you are both fully "comfortable" before mentioning this request or she may think you are setting her up.  Do not expect this to lead to a cheaper price, you are paying for a ladies TIME.

However in most places FBSM and tantra practitioners have lower prices than full companions (I don't really understand why, it's quite physically demanding work!)  In many cases those practitioners consider working with their hands an art form...

It really depends on the paid escort or agency. You'll have to feel your way with them and determine if you can bring it up earlier before the actual appointment or not. Generally, the earlier you can discuss this, the better, as it could avoid wasting your time and theirs.

but her rate for her time will not likely change.  For a lesser fee, I suggest you start with a nude massage provider (FBSM).  You'll at leasty get a HJ if you read the reviews.  You'll likely have to research to assure any more.  Independant FBSM providers tend (in my area) to be half the cost of FS providers.   MPs tend to cost more than independant...  adding the house charge to the girls tips for service.

I love bbbj and can spend the entire session making your legs quiver and shake before polishing you off but you aren't going to get a lesser price just because that is how we spent our time together, you still took an hr of my time.

After you pay her and she is comfortable that you are not LE or a creep.  This of course would mean that the price stays the same...

unless you see "happy ending" dates only, I doubt you are going to get a lower rate. Perhaps she will offer you that option after the first time, but don't go in looking for it on the initial meeting. I have several regulars I offer bj only specials to, but here's the catch. Most guys can't seem to understand that for half the rate, you really are getting only half the service, so many providers do not offer these options on their websites. You see things like, "She was not gfe, she didn't let me touch her, it was rushed," etc. when the guy flat out knew it was only A BLOW AND GO! Duh...that's why she did not let you do xyz, for half the rate. If you want gffe, pay for it or don't be shocked when she does her job on the other option YOU requested.

I am very careful with whom I offer such services, so I can assure we are both on the same page.