Source for bulk slotted plastic pots

[K-Sci]

I'm running out of 3 sizes of clear plastic pots I purchased in volume about 15 years ago. I don't recall the supplier's name. They are:

2-1/4" square - Markings "Water Dance"
3-1/4" square - Markings "Farrand/Jardinier 3-1/4" "
5 inch round slotted pot with a raised perforated center. Marking: "3"

Searching for a seller of these pots or similar, all I find is sellers offering small quantities at extremely high prices or manufacturers that sell by the crate. I've written several of them asking about volume purchases to no avail. I need hundreds or thousands, not tens.

Anyone have a good lead on where I might find pots like these?