It depends on the artist that you’re speaking with and their individual prices, as everyone’s is different 
It also depends on what exactly you want in the drawing; how many characters, how much visible body etc. Artists will also charge more as their work becomes more detailed/realistic.
I suggest speaking with other artists to see what they offer for your budget (if you have one) and making a decision from there as to if you want to commission or just do it yourself.
I’ll link my commission information below so you can see my own personal art/prices 
Here’s my Commissions thread with more info. I also recommend checking out my Instagram to see my most recent artworks. 
