There Might be a “pickup charge” (similar to a delivery fee for pickup orders) on the pick up order that is usually $one.99 for non-Instacart+ customers. Instacart+ membership waives this like it would a delivery price. There’re a few key sizes of N2O chargers that you can obtain in bulk https://zekifruchtgmbh.com/product/bulk-order-refillable-cream-chargers/