How much does mouth injection cost?

I want to inject botox into my Depressor anguli oris so that my mouth isn't downturned anymore,as it relaxes that muscle wich is responsible for the frowning mouth.I also want to inject some filler into my upper lip so my lip will be fuller and slightly wider.How much would this cost?Any estimation is well-used. I also learned that if I pull my cheeks sideways/upwards ,my mouth straightens and broadens aswell,does that mean broad cheekbones would give me the mouth I desire?