I started my first ecommerce site around a year ago. Recently I have experiemented with offering discounts on multiple items. E.g 1 item costs £2.99, buy a pair for £4.99. I have found in nearly all the items I have used this, the customer nearly always gets a pair.
Whilst I make a bit less profit per item, the shipping cost is usually the same for a pair, so I half the shipping cost per item. It also means I make more money from each customer.
I'm sure many others use this technique, if you don't you might want to try it out.
I'm just about to launch a voucher system. This will email all my customers who have subscribed to a mailing list, and give them a 10% discount code.
I was wondering if anyone has other suggestions of good ways to increase sales?