I really enjoyed reading the op, it is a creative idea to try to recoup some money on an expensive but highly desirable product. I really don't see how buying big ticket items from Moontrail, getting some "free" gear and selling the "free" gear on Ebay would harm Moontrail. In fact, I think that this method would encourage people to buy bigger ticket items from Moontrail that they might otherwise buy elsewhere. If a buyer wants to take the time and make the effort to sell the little extra items that they purchase with points then all the power to them. They get to recoup some money and Moontrail sells an expensive product.
Most of the products that can be bought with points are being sold by many other retailers. If a few people are also selling these on Ebay or in some other venue, I don't think this will equal a loss of sales for Moontrail.
I also really like what Michael said: "It also allows them to dispose of overstock, old or outdated inventory." The point system is great way to do this.
Anyways, interesting discussion, thanks to all.