I'm mostly a lurker, but have a suggestion. The beginning of the web site could start with a disclaimer, e.g.
This is a not a business, but a bunch of folks pooling their resources allow the DIY community to put together some of the best speakers in the world at an affordable cost. It looks like a store, but when you place an order, you are not buying an object, you are contributing to the DIY community. This means that there is no middleman or accountant to skim some money off every transaction, but the tradeoff is that you may have to wait longer than a day (or a week) to get your order.
A click-through link on the order form with a similar statement might be a good idea. Will it scare some folks off? Sure, but these are the ones that will email you every day about their order. I will only email every couple of weeks . You can always change this if it turns into a business.
Patiently awaiting my order...