Ho, dankon! Mi certe iam kontrolos tion, kiam mi havos sufiĉa da tempon.

Esperanto, very slowly, using Duolingo. Why? Just because.

They are using it in a different sense. Not that they are considered luxury goods by being expensive and associated with higher socioeconomic standing, but that they are a frivolity which is not necessary and which has tangible costs that they feel are justified due to pure pleasure.