I found this 4pk of Expo Dry Erase Markers on Clearance with a FREE Dry Erase Calendar Board at HEB.
You can use the Expo $1.25/1 low odor or original 4ct chisel or fine markers (exp.9/30) 8/18 SS
This is an awesome deal because the 4ct. Expo Markers are originally $6.65ea. at HEB.