I worked as an electrician and we pulled this off a homeowner's system as we put in new solar equipment. They were fine with just throwing it away and I offered to salvage it. That's why I'm asking a very fair price for such an item; it's also a few years old but I believe, still a relevant device. Compared to the same new model on a few sites, it runs around $900. Here is the same model (see these links for the specs):
It has only one knockout hole punched out of it, (on the bottom) from where the previous pipe landed. Easily can be sealed with a knockout hole seal, or landed in the same hole if applies.
If you're willing to pay $500 I would greatly appreciate it, I'm on tough times.