Botox in NYC that wont break the bank?

I'm looking for a reputable place that does Botox for gummy smile and crows feet in NYC. Most places I've seen charge like $200 per area, so the gummy smile is one area, and crows feet is another. These places seem to charge around $15 per unit for any extra units?? But I've heard of places that ONLY charge per unit. With gummy smile, I only need around 4 units, so it just seems crazy to pay $200 for it. Anyone know of a solid place in NYC that only charges per unit? Preferably $16 or less?