Snob appeal literally means an appeal to someone's sense of social status. Anything with snob appeal refers to a perception of quality, or upmarket values. It can be a denigrating expression, depending on context and tone of discussion. In most cases the snob appeal value is being described as distinct from the real value of the subject. The use of idiom is important in the meaning, which can be complex.
Examples of Snob Appeal:
|A Rolls Royce is more than its snob appeal.|
This car's image has snob appeal, but it's really just a sedan with stabilizers.
There's no snob appeal in a jalopy.