I thought I would be able to save parts by not building the back the same as the front. But then I felt compelled to make the inside presentable which meant I could not use the less expensive modified bricks that are flat on one side and have something sticking out the other side. Also I had to build somewhat of an interior, so I am not sure if this is less part-intensive. One definite advantage to not having a back is that it is easier to reach inside to fix things.
Note: I actually used some LUGbulk 2016 parts! 🙂