The surface is the whole purchase. Melamine is inexpensive and absorbs pigment over months until writing will not lift; porcelain and glass stay serviceable for years and cost more up front. In a room used daily the cheaper board is replaced twice in the time the better one lasts. Erase after each session. See whiteboards, glassboard markers and whiteboard cleaner.

Self-adhesive dry erase whiteboard film being applied to a glass office wall.
Dry Erase Products for Planning

Shop dry erase products including sheets, decals, tapes and pockets for classrooms, offices and planning.