crvneuro, I can't read your repair estimate, I don't want to speculate as to what the Jiffy Lube technician may have meant with his notations. So, let's go at this from another direction.
As you may know, brake pads consist of a layer of friction material, approximately 9mm thick (edited), bonded to a metal backing. In your situation, it's conceivable that the friction material has worn down the metal rotors -- which I assume is what the technician meant with his notation about "25% rear disc life" -- but that's highly unlikely. It's much more likely that he meant the friction material on the brake pads has only 25% of their life remaining, but I'm guessing. However, based on your description of where you drive your CR-V, that's more likely.
So, now what? Well, once the friction material is completely worn down, the metal backing will begin to cut into the metal brake discs, ruining them. Then, and only then, will you need to replace them or have them resurfaced. In other words, if you replace the pads before they wear out, that's all you'll need to replace, and brake pads are cheap -- approximately $70-$80 for a set of rear brake pads. (Footnote of sorts: You're likely to get all sorts of recommendations about brake pads -- OEM, aftermarket, types of pad material, etc. I leave that to you to sort out.) FWIW, I've never had a problem with OEM (Honda) pads, and they are very inexpensive if you buy them online.
As noted above, brake pads are easy to install if you opt to do it yourself. If you have the work done for you, you can expect to pay for an hour's labor to replace the pads and lubricate the component parts. You shouldn't have to replace the brake rotors (if that's what the Jiffy Lube tech was inferring), and I wouldn't allow the shop doing the work to resurface them either. All that does is literally shave metal off the rotors, shortening their life. That also makes them much more susceptible to overheating and distortion.
Finally, it's not unusual for CR-Vs (and Accords) to wear out their rear pads first. In fact, it's quite common. Were I you, if you don't want to pay a Honda store to do the work for you, I'd look around (ask friends, etc.) for the name of a trusted independent brake repair shop to do the work for you. I would not get brake work done by Jiffy Lube (nor would I take my CR-V there for oil changes, but that, too, is a subject for another time).