What kind of income do you need to spend $200 on a Valentine's dinner? Probably not $1k a month. It's a stretch at $2k but not impossible. It does not feel "absurdly not socially normative" at $3k -- I did it when I was a young twenty-something.

To the extent that there is a real class-based difference here, it may be "degree of comfort with the notion that 'there is probably a way to spend money to achieve this without needing to do anything else.'" It's like, I don't know, a bureaucratic process which requires someone to go down to City Hall and stand in line for half a day. The middle class is capable of buying their way around that but it doesn't generally occur to them to try; the upper class don't even hear that that was a requirement because the very expensive person they use to handle legal issues already subcontracted it out.