Thanks for your respond. We have thought about the same thing too.
In fact we have already tried selling things at a lost to draw customers. (we have tried to sell things at our cost-price but it is no longer a bargain comparing to those sellers from China)
With no surprise, selling at a lost seems to work really well on getting new customers. We got 1000+ purchases for the last promotions ($1 for a iPhone case delivered, free 3-days delivery.) p.s most customers get their products in a day and always come back when we do the same promotion.
There is no doubt that our customer service is very best (we get 99.7% rating on eBay). 100% refund if products arrived broken etc.. However, we just don't get the come back customer nor the word of month referral. It seems like people are only here to get the things at the give-away price and they are not interested in getting your other products.
Did you do the same thing but works out? any other suggestions?