P.S. You should do a careful cost/benefit analysis of how much you are willing to pay vs. how far you’re willing to carry a Christmas Tree (and how manly you’ll look doing it). This is also known as the Traveling Salesman Problem.
P.P.S. This post is a post-purchase reflection. We picked up a tree wandering back from the bar the night after Thanksgiving. Tipsy purchases are always efficient! We got a mid-priced tree 🙂