Yes, burlap sacks are more expensive than stand up pouches. Stand up bags are made mainly from plastic and other laminate materials. These materials are cheaper to procure and produce than burlap, of which burlap sacks are made. Production costs for pouch bags are also less. A stand up pouch costs less than half of the price of a typical burlap sack. Inventory and transport expenses are less for stand up bags, although the difference is not so much as in production.
Add to these factors a small production run - StandUpPouches.net has the lowest industry run in the market where businesses can order as less as 5,000 pouches - and together these factors make stand up pouches a less expensive option than burlap sacks.
In addition to being less costly, stand up bags offer several other advantages in the production of consumer goods. Stand up pouches are more print friendly. They yield to advanced rotogravure printing more readily. It is easier to imprint intricate and engaging designs on stand up pouches that offer a smooth surface than on burlap sacks with rough surfaces.
Stand up pouches provide better security against moisture. In comparison, it is hard to make burlap sacks water proof. Also, stand up pouches can be made to create a barrier against oxygen, which is nearly impossible in burlap sacks.