If you have any type of carpentry skills you can make a 3' by 4' stand for about 60.00(self standing or tie against a tree). I have built a couple over the years and they are strong and will last for atleast 5 years probably more, I would take them down before they had a chance to be unsafe. If you can find a lumber yard and ask for scraps then all you' ll have is the cost of screws. If you do build between trees(I would not) make sure they can handle the load and always check to make sure nothing has shifted loose. I know alot of people that have built there own out of wood and they were just as safe if not safer then store bought. Just remember you are going to be up there with a gun, knife etc... MAKE SURE YOU KNOW WHAT YOU ARE DOING, and be safe. If you know how to weld and work with metal you could also make a stand pretty cheap.