It can be very hard to demo equiptment, especially if you are honest enough not to use dealers and then buy used. I go about it by buying and selling. If you are careful, you can do this without losing money. In fact, you can even make money and trade up. The key is to do your homework. Besides the obvious care needed when buying on the internet, know what the market is. Buy things at the right price and make sure they have resale value. I learned this the hard way. There are some great products that have no resale value. There are other great products that do. If you are sure that you will hold onto what you buy, go for it. I am never sure anymore. I know this is not the advice you asked for, but I am responding to the good advice that Sedond and Justlisten gave you. This is one way you can follow it.