In writing I have time to think, so I can find a summarizing sentence. But in spoken dialogue, it's a real problem. How do people do it?
I can summarize it in writing in 1 sentence ("His prices are overall good, but it's all very stressful with him) but if asked in conversation, I'd go something like this:
"He gives great prices for strays, but he charges a lot for night appts. for house cats, and when I asked for a discount because during the day I'm working in another city so I can only come at night, he answered "Well, I need to get back to my work, just take that price into account if you come tonight." Besides, finding a moderately-priced parking lot in his area and with available spots is a nightmare. And then I have to walk several blocks carrying the cat in the carrier up to the clinic, or they'll do me a favor and if I call from the car they'll come out and take the cat (if their hands aren't tied at that moment), but then the cat has to be without me for like 20 minutes till I find parking and walk back to the clinic. Besides, he once told me to cage my 3 cats for a house call, he said "I'll be there in 10 minutes max" and he never told me he then changed his mind and wasn't coming, the cats suffered in vain, caged for 50 minutes waiting for him. On the other hand, he does give me very good prices for my cats, because they're rescues and he takes that very much into consideration. So for costly treatments, he's the one to go to. But for just a night appt. to see why my cat is scratching so much, there's another place that charges the same 24/7 and is open 24/7 with plenty of free parking space outside, and they're off the city center, which is a lot less stressful when driving. I also have the option of a vet I don't need to drive to, it's very near my house, but his prices are high, so I'll only use his services in occasions when, for some reason, I can't use the car or something else prevents me from going to the other two options.
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There are two means of refuge from the miseries of life: music and cats - Albert Schweitzer