My 16-year-old son wants a bow for his bday/xmas present. I know nothing about them and could use some NJGF'er wisdom.

He is a lefty, already 6' tall, probably on his way to a skinny 6'2" or more. Shooters in LEH says he has a 31" draw. He has been using a hand me down bow from his 5'9" uncle, but that needs $200 to bring it up to snuff and it would still be too small. Not worth it. 

Any good archery shop recommendations for getting him set up?

He just wants to shoot recreationally, with a compound bow, and no hunting at this point. We are going to A&M in Lakewood tonight to look around.

We are hoping to get into a beginners bow for $400 or so. 

Educate me. 

Cheyenne Mountain Outfitters has an excellent archery section but they're about an hour from you.  

Check out the youth bows by diamond. I think it's called "infinite edge" or something like that.