I use Monte Packaging (link below) and will be ordering from Nolt's Produce Supplies. (717) 656-9764

Here is a link that might be useful: Monte

We have amish people who grow produce and sell it at a couple of local auctions. The auction houses sell the boxes there at a lower price than I could order them in. You might want to see if there's a fresh produce auction around there that might do the same. All the local producers can get their supplies in bulk that way.

Our local Southern States Cooperative sells them - not as cheap as if you order hundreds or thousands, but nice if yoou don't have the space or capital for lots. The MA equivalent might be Agway?