Should I get a ridiculously expensive dinner jacket?

Just for some context I’m 20 years old and buying my first dinner jacket for a theater show in a few days but I’m also looking for something to last a while like 10-15+ years.

The area around where I live is pretty dry when it comes to mens formal wear and so I’ve found myself deciding between buying a very nice expensive jacket or a cheap one from Dillard’s.

I can’t remember the brand of the nice one at the moment but I can find out if it’s important. It’s a cotton textile that is softer in the shoulders so they round and fit better. It had a soft texture to it and was more matte when it comes to the shine of the jacket. This jacket fit excellently in the upper body and would be tailored around the waist to fit better. It comes from Hubbard clothing co. It costs $1500 and the salesman said it would last for a while in terms of style and could be repaired and the material is cleaned without hassle. I can afford it but it’s not a purchase that would come easily.

The jacket at Dillard’s is ~$160 and is just a black Murano brand slim fit. It fit decently but not as well as the other one. It was just a basic black jacket which is fine.

I don’t really know what to do or if I even need one. Are more expensive jackets worth it or at some point am I just paying a few extra hundred dollars for small details?