>>1457978i got mine for 30 bucks new from amazon. If you don't like it, you can still resell it.
I initially bought mine because I wanted to stock up on food/meals for exam period, but didn't have a freezer at the time.
Now I got a freezer and only use the dehydrated food for camping as it's too much of a hassle to dehydrate meals if you have a freezer and eat your food within a day of it being out of the fridge/freezer.
Apparently dehydrated food lasts a few months in plastic bags, but I kept mine in a paper bag and even after a whole year my left-over dehydrated soups were still good to eat.
Put at least twice as much spices in your meals than it says in the recipe or otherwise it will come out a bit bland. Also the meals will have one general taste, rather than a few distinctive ones. So if you want to cheap out on spices, just use one strong one (works best with spicy stuff).
Since I can't stand commercial instant meals and get migraines from overly salty stuff, I'm really happy I got into dehydrating food. If you already cook for yourself daily this is another step to avoid food that someone else cooked (as I try to). Also opens up a lot more possibilities for trail food, especially when you're on a plant based diet.
If you're an omni you definitively have to try making your own beef jerky, though.
Pic related, me cooking on campus because I don't like the canteen.