If the products you are selling are appliances then I don't think you can bring in top notch products because the business relies on the brands that you have. With the prices you also cannot just go on sale without the approval of your suppliers otherwise you may lose a contract with them. What you need is a good marketing campaign.IN order to increase sales or bring more customers, you need to offer top notch products and services for relatively cheap price, much cheaper that your competitors' price.