That dehydrator looks like a more economical option. What size do you have and how much can you make per day? With harvest season right around the corner, it makes sense to stock up on fruits and vegetables.
We have the 9-tray Excalibur. They make a higher-end one, but this has worked well for us:
My father-in-law had good results with one of the round ones, may have been a Nesco; but we read somewhere that the air-flow in the square ones was better, so we went with the Excalibur. Last night we did about 6 medium sized zucchinis, in 1/4 inch slices; they took up only a tiny bit more than one tray.
There are some good books available on food drying.
Some things shrink amazingly - a few weeks ago there was a sale on celery, so I dried two huge bunches. They dried down to a scant 3/4 cup, and my husband vacuum-packed it into a jelly jar with the Food Saver jar attachment. You could use oxygen absorbers as well.
You may want to get a mandoline, or some other tool to make the chopping/slicing go faster; but in general it’s not too time consuming, and it’s fun. We generally just let it run while we’re sleeping.
(Not associated with Excalibur; it’s just the only one I have experience with.)
-JT