I was in Wal-Mart late last night to get something for a late night home repair and I wandered into the "hunting" department to see what was on clearance.

They have rolls of DUCK Brand Duct tape (Realtree Camo) on sale for $3. They usually have off brand tape for cheap in the classic gray, but not the DUcK brand. The crappy off brand stuff seems thin and weak to me.