Pottery-barn-kids-unlimited-flat-rate, standard shipping. our shipping and processing fees cover the processing, handling, packing and delivery of your order. most purchases shipped from our warehouses will arrive within 4-5 business days.. Unlimited flat rate is the fee structure applied to our truck delivery for most orders. items eligible for unlimited flat rate delivery will be indicated on the product page., standard shipping: next day shipping: front door items ship from our warehouse and arrive within 4-5 business days of receiving your order. some items sent directly from our suppliers may take longer, and items ordered together may not arrive in the same box.