Go. Order one of their fancy pastries and nothing else. Start with a lemon torte (the one that looks like the Happy Meal cheeseburger of the future.... You'll know it when you see it). Congratulations, you have probably tasted the single greatest Tarte au Citron in this city.
Everything else just doesn't merit the price tag (Potier knows his strength lies in the pastries; ergo everything else is outsourced).