DollarTree sells a lot of name brand items for a dollar. They have a decent section of pens and mechanical pencils. Here are some that I found today.
Zebra Z-Grip Max Pens - 2 set
uni-ball Vision RT Pens - 2 set
Pentel Icy AL25TBP2-DT Mechanical Pencil - 2 set
4 pens and 2 mechanical pencils for $3 is not bad.