I thrifted a Gieves & Hawkes by D’Avenza navy Chesterfield coat a few months ago. I’ve since put ~$150 into repairing the lining, nipping the waist, replacing the buttons, and letting out the sleeves. I’m incredibly satisfied with the fit in all areas except for the sleeve length. I like the sleeves on my outerwear to do the job they’re intended to do - cover the sleeves of my suit or sport coat. My tailor lengthened as much as possible, but a quarter to a half centimeter of suit sleeve still pops out on occasion.
Is it perfect? No, but the coat is so exquisite and the fit elsewhere is so perfect that this minor imperfection can be easily overlooked.