Pallets can be packed at least 3 different ways.
The first is boxes like that. You'll get something in the range of 8-12 of those boxes per layer on a standard 48"x40". And then they will layer 5-6 layers on a pallet. This will give you ~160-288 cells per pallet. I don't have a packing layout or full pallet to give you the exact number
An older packing guide from the EVE LF304 datasheet
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Pallet option two is a stack of single layer wooden crate pallets. They take a pallet sized crate with an integrated pallet on the bottom and fill it with pre-cut packing material. It's then filled with cells and a lid is put on. These crates can then can be stacked on top of each other to fit in one pallet location. These are normally smaller than an American pallet in dimensions as normally they come straight from China.
Stacks of EVE crate pallets from 18650 store
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Pallet option three is layers of molded foam containing cells. These are pallet sized layers of foam that get filled with cells and then layered on themselves. Somewhat newer packing then the others. I do not know if EVE sells them to regular customers like this but I have seen them in foam like this. I know Cornex gets 200 equivalent sized cells per pallet with this method
ETC 176ah cells in stacked foam from a grey market seller
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