That is a very good question. That is why I am looking into opening my own plant store. It is so hard to find plants and the things you need to to go with them around here were I live. I have been having the hardest time finding plant stands. I don't want to order them on line and have to wait for it. Then you have to pay for the shipping too.

Hi melsmile, That's interesting that you want to open a plant store. Does that mean you have a lot of house plants yourself? I haven't bought plant stands in awhile. The few I have I'm pretty sure I bought at Home Goods or Marshall's. Although not all of them. I can't remember where else I bought them.

I have ordered before from Logee's, but I'd just like another option.

Lowes and HD usually have an assortment of utility shelving in the organization section of the store.
They are the white or chrome metal ones, not the ugly gray for your garage. Also check the bathroom shelving area.
Think outside the box when shopping.
You can even take measurements and make them from wood.
The DIY put-together bookcases work also just take the back off and some have removable shelves for taller plants.