As Roger Caffin wrote, many chinese websites ship for free and sell items for dimes, and they still make profit(?)
However, for me, I don't trust my credit card number, personal information with those Chinese websites. Also with free shipping from Hong Kong, deliveries are usually 6 to 12 weeks (yikes) I think they sell the product before they acquire it, and wait till they have enough pre-paid orders before they place the order with the manufacturer for a bulk buy.
For me, I trust my credit card number/order with Lawson, even though I could save $2 elsewhere. Identity theft and credit card fraud with a Chinese website is not worth the mini discount for me.
So Lawson, I believe your reputation is your advantage. I'd be interested in your email list/website plan.