I am not a royal mail business customer. I have purchased stuff on ebay for £4 (free postage) that were cube shaped and they were delivered to my door. I was always mystified as to how it was viable to send these using royal mail and make a profit on it. Anything over 25mm in thickness is £2.90 (2nd class). Am I missing something here? Are people selling stuff on ebay making pennies in profit while they are paying the lions share in postage, ebay, paypal fees, wholesaler fees? Or does royal mail offer big discounts to business customers? I need to sell a small batch of items (40 units), and can't believe how expensive postage is.