Federal  XM193  is $2.99/box.  

Theoretically you need the internet coupon and are limited to 20 boxes.  But I went in to my nearest and  took 20 boxes to the register.  They rang at $2.99 without coupon when scanned.  They didn't need the coupon, and when I asked if I could just get a case, 5 more boxes, they added five more on.  Will a case scan at the lower amount?  I don't know.  But that was $80.27 out the door.

I got the Internet coupon by going to their site www.turnersoutdoorsman.com/and signing up.  the sign-up section implies you get the weekly e-mails starting next week.  But it then concludes by sending you to a page to print out the coupons for this week.

They are primarily in Southern California, and I don't know if they mail order.