I plan on tapping 100-150 trees on tubing next year and need to put it on vacuum. This will be my first year with tubing. Now I would like to know the cheapest system for a small producer like me. I also Have very little slope so gravity is out of the question. I have heard of the lunch box system and I think it would work quite well. I just want to know if there is a cheaper solution to the lunch box system and a compressor or if there is another system like it that you guys know of. I am new to this and I am not to sharp on the terms of the extractor, pump, and releaser. Thanks to whoever can help me!