When pretending to be happy serves a longer term interest of eliminating the unhappiness. For example, I pretend to be happy to club promoters even if I'm pissed because in the end, my attitude will score a huge show. And that will provide a moment of happiness in the future as well as more security overall. Also, you've worked customer service, you know all about the plastic fuck-you smile.
a price would really depend on what you wanted, how detailed, how difficult a fabric chosen, your size wouldn't be an issue, aside from I think my dress form might be too big, but we can discuss further, if you want