I'm going to TRY to give a non-sugarcoated yet non brutal answer here.
Being the hobby mecca that Dallas is, it's really hard to notice UTR providers IF she's not already a favorite of a few hobbyists. If you raise your rates, odds are pretty good that you're going to lose clientele. Because you are UTR, you might not get noticed by new guys. There won't be any new reviews of you floating around (since I believe that's one of the criteria if you're UTR). Many guys are visual creatures, and lack of reviews and pictures means the attention span will be elsewhere.
Using my car dealership analogy yet again, it's like having a dealership on an old back country road. Only a few people know about you. Those that do know about you, you've priced your cars out of their price ranges, so there's no incentive for them to go back. There's also may not be incentive for them to go tell others to check your spot out. You're going OUT of business (retiring), but you're going to CHARGE MORE on the way out. That's interesting.
Also, as you go through these final sessions, where's your mind going to be? Are you going to be focused on being a great provider, or will you go through the motions since there MAY (or may not) be a piece of your mind that doesn't care if he's enjoying it or not, since you're most likely not worried about repeat customers?