I will be making my own stakeout pole here shortly. 8ft. 3/4" fiberglass tree stake from A.M. Leonard or Amazon (~$15 shipped), sharpen one end and add a pvc t-handle on the top. I believe the fiberglass blanks are roughly the same as the popular, more expensive stakeout poles.
super cheap options also include wooden broom handle, old ski pole, golf clubs, etc.