They offer the best discounts and have strong policies on returns, damages goods, and back-orders. Try and use a credit card.
Credit cards are the wave of the future.
They defer payment for 1 month and mail ordering places won't charge you until they ship goods out. Credit card companies summarize your charges and will help you in disputes with the store. For other anime goods So far, California is the best place for anime goods. That means ask for catalogs and ask for advice on the net. Some shops are much better than others in both price and service.