"Premium appeal" refers to something that is perceived as high-quality, exclusive, or luxurious. It suggests that a product or service has attributes that set it apart from others and make it more desirable. Full definition
Place the S6 Edge face up on a desk and you can't help but be impressed with the sweeping sides, rounded metal frame and overall premium appeal of the handset. (techradar.com)
The cabin sports a far more premium appeal with the use of new materials and better quality plastics. (motorbeam.com)
The piano black finish gives the steering a more premium appeal. (autosarena.com)