I'm thinking about $2.50/ea would be nice.  Muffler clamps are NOT adequate.  Muffler clamps have 2 semi-circle contact surfaces, and if the pipe is slightly smaller than the clamp, this creates a 2-point contact which causes rocking action.  Gross.  The nice toothed and V-angled designs here are the bomb.



Soup for scale.  :)

--Bart