The problem is your business model. I was pretty sure this was going to happen and I was right. Why? Because I have seen the same thing even with huge companies. When HP had the fire sale on their Touchpads they experienced the same thing. If a company with the server/internet resources of a company like HP can be overwhelmed a small company being hosted by a third party, using a fourth party for credit card processing doesn't stand a chance under these circumstances. Instead of trying to open the store for short periods of time and getting slammed all at once just open the store and limit the amount of high demand liquid that can be ordered for the day using the in stock/out of stock feature. This way you continue receiving revenue from the products you carry that are in stock and you can post stock of the high demand items at random times to prevent as large of rush all at one time. This is the method used across the internet and it works. Until you do this you are going to continue having these issues.