A lot of balers have moisture meter's on them to tell you the moisture content of the hay. You can also check the moisture content of the hay before baling/rolling with a moisture meter.
I would add, if you have any suspicion that the moisture content is too high after it is baled, do not put...
I would definitely be interested, because I suck at weight estimations. However, I am not big on subscriptions. I would prefer to just purchase it outright.
Is it gas or diesel? The diesel engines will last forever, however, those models had a clutch problem. I would avoid unless the clutch has been replaced which many were.
I had to put a temporary electric fence up a couple of years ago and rather that use a ground rod I just tied it to an old 1/2" steel cable that was submerged in the creek for about 20'. That was the best darn ground I ever had. Even though it was a battery powered charger, it would sure knock...