Payment is usually made monthly, or at the end of a 60 or 90 day consignment period. Resale stores buy outright. Ask the owner what percentage of the selling price you can expect to receive. Clothing should be in near perfect condition, freshly laundered and unwrinkled. It's best to always pre-treat baby clothes to remove stains.
Many stores take clothing in season and ask that they come in on hangers.
Clothing should be in style. Non-clothing items should be clean and in excellent shape. Shop frequently for the best selection as inventory changes daily. Get to know the sales staff. While many stores will check on safety recalls before selling baby equipment, consider it your responsibility to double check before using the item.