3PL fees are charged in a few different ways.
Ingestion Fees - Ingestion fees include adding the product to your storefront (including images if needed), weighing the product, counting and "binning" inventory.
Ingestion fees are billed upon receipt of the shipment for each SKU. This will be auto-charged to the card on file - if you prefer an invoice, please let your account manager know upfront.
Warehousing (storage) Fees - Warehousing fees are based on the size of the bin used to store each of your items.
Warehousing fees are calculated at the end of each month and charged to your store account.
Pick & Pack Fees - Pick and pack fees are applied to each order that Print Your Cause fulfills.
Pick and Pack fees are billed per order. These fees will be automatically deducted from the store profit at the time the order is placed.