Montespkg.com is one. Another is glaciervalley.com. Monte, I've used. GlacierValley was a new vendor at my spring conference, they are set up for smaller growers.

Where are you located? If near an Amish community, you might be able to get boxes thru them. Especially if they have a produce auction. They buy a large amount and then sell to their growers and others.

Marla

I get lots from the grocery store where I work. The tomato and strawberry boxes stack nicely for bringing tomatoes. The sweet potato, apple or pepper boxes are great for peppers, eggplant and summer squash. Banana boxes are good for root veggies and squash and melons. I get small tray boxes from the grocery and dairy departments for people buying a few plants in spring.

There is a local old couple that make bushel baskets and till baskets so I have those too. I like the ones called squats. If you have a truck with topper or van the cardboard boxes are fine. I do not have a topper but it doesn't rain very often on market day and if the boxes get wet I just take home more.

Buckhorn Plastics out of Milford, OH has really wonderful plastic stacking/nesting crates but this is a wholesaler so they do have a minimum. You can get their crates with no min. via Nolt's produce supplies in Leola, PA

Here is a link that might be useful: Buckhorn Plastics