At this point i'm buying out the complete petmart of bully sticks weekly. I'm buying for the three dogs in the house, a hard-chewing golden, a boxer and Wonder. With Harley (the boxer) on crate rest, we've been tearing through them.
We also get the Red Barn brand. It seems the others don't last as long and causes a gaseus problem. I recently ordered a whole box of the 12 inch ones from petdirectfood.com and it seems like a great value. Its actually alot cheaper than what I see on the red barn site. A box of 35 ran me about $114 bucks including shipping. Its way better than paying $4 bucks a piece plus tax for the same ones locally by me.