Ordered a few pallets of bulk bottles for my first run and now need boxes.

I did everything in 750ml Belgians with cork and cage.

Anyone have a suggestion for purchasing cheap storage boxes? They will basically just go from storage directly to a retailer, who will be selling them as singles. Everything im finding is more for shipping and way more than i need. really trying not to spend 2500 on boxes just to move them from point a to point b. At the quotes ive received its cheaper to order more milk crates and just transport everything that way and leave them with the retailer.

Any thought or ideas would be appreciated.