The ones they sell in the Supplies stores are VERY overpriced but they will last a life time ... I have seen them in centres that are 25 years old and they are still in fairly good condition.

However if not in the budget the one daycare I worked at we had a awesome carpenter dad who volunteered to use the measurements and specs of the 'expensive ones' from the stores and made us some awesome ones out of MDF which we than painted with the Malamine paint ... served the purpose.

My spouse made my for my home daycare ... six cubbies cost less than $100 in materials and paint and because mine are a piece of furniture in my home he used cedar trim and chrome hooks and so forth to make them pretty.