The short answer
Las Vegas med spas typically price Botox and other neuromodulators (Dysport, Jeuveau, Xeomin) at $10 to $18 per unit. A full treatment of forehead lines, frown lines (the "11s" between the brows), and crow's feet generally uses 40 to 64 units total, which puts a first full-face treatment somewhere between $400 and $900 depending on the injector and how many areas are treated.
Some practices quote a flat "per area" price instead of per-unit — that's worth asking about directly, since a flat-price area treatment can either save you money or cost more than per-unit pricing depending on how many units your specific anatomy requires.
Why unit count varies so much by treatment area
Frown lines (glabellar lines) typically need 20 to 25 units. Forehead lines run 10 to 20 units. Crow's feet need 5 to 15 units per side. Men generally require more units than women for the same visible effect due to stronger muscle mass — a factor some new patients aren't told about upfront, which can make an initial quote look inaccurate once the actual treatment begins.
Why the per-unit price alone is a misleading way to compare providers
A $10/unit injector and an $18/unit injector aren't interchangeable line items — injector experience directly affects how many units are needed to get a natural-looking result and how evenly the product is placed. An inexperienced injector using fewer units at a lower price can sometimes cost more per visible outcome than an experienced injector charging a premium, because a natural, precisely placed result lasts the full 3 to 4 months, while an uneven or under-dosed treatment often needs a costly touch-up within weeks.
In the Las Vegas market specifically, look for injectors who are registered nurses (RN), nurse practitioners (NP), physician assistants (PA), or physicians — Nevada requires neuromodulator injections to be performed or directly supervised by a licensed medical provider, and the credential behind the needle matters more here than almost any other variable.
What a first visit should actually include
A proper first consultation includes a facial muscle assessment (not just "how many units do you want"), a conversation about your goals and how much movement you want to retain, and — ideally — before photos so you have an objective record of your baseline. If a practice skips straight to injecting without any of that, treat it as a signal, not a convenience.