How can manufacturers and retailers understand what products sell better in different parts of the country?

Today, 3M recommends that retailers sell a 10-pack for $10.18.

Microsoft will charge $109, but it said most retailers would sell the new program for $89 to $100.

In some cases, a manufacturer's own retailers sell into the gray market.

Some retailers sell them at the same prices as larger bananas.

But even the largest retailers are receptive and sell many of these items.

A shop is usually a small building where the retailer sells goods.

Once upon a time, retailers sold customers a product and then walked away after the transaction.

Last year, American retailers sold about $3.8 billion worth of it through stores, direct sales and mail order.

If the retailer sells the sugar at 52p per bag, what is the total mark up on the bags?