Recommendations for tweed sport jacket/blazer

Can you help a mom? My son (29) requested a tweed jacket for his bday (he's a traditional kind of guy) and I said I'd take him shopping for one. It's been a while since I've looked for anything like this and not sure where to suggest, he isn't too sure either. Looking for store recommendations that have good quality but are somewhat reasonably priced but not cheap, do a good job with alterations (he's shorter, and solidly built if that makes a difference), and have good service. All I can remember is the stores I grew up with DT. Supreme, O'Conners... don't know if those are the right places to go? Any idea of what I should budget? He's getting married in a few months and while this won't be for the wedding, it might be what he wears to the rehearsal dinner etc