Poshmark provides a flat rate of $7.45 for expedited shipping on all orders

Poshmark provides a flat rate of $7.45 for expedited shipping on all orders. This shipping fee is paid for by the buyer. ... Add listings to a Bundle for a single shipping fee of $7.45 as long as the total weight of the order does not exceed 5 lbs. Any overweight costs are paid by the seller.