Pics of sub and amp. Sorry they are backwards, but I am on vacation left my digital camera at home, so these pics were taken with my MacBook.
You can see in one picture that one of the amp contacts has some rust on it. I never noticed the rust until I took the sub out of the car, but it was still hitting hard and working fine. The rust can probably be removed if it bothers you.
The top of the amp also has a little rust in the crevice around the black circle in the middle. This is purely cosmetic and, again, can probably be removed with little effort.
For $75, you could throw the amp out the window on the way home and still have gotten a great deal on a Pioneer sub in a ported box. But I am confident the whole setup will work great once hooked up.
NOTE: The wires you can see in the pic of the amp and top of the sub are NOT coming out of the amp--one end of these wires is securely connected to the sub (inside the box), and the other end is supposed to be loose. You hook those two wires up to the amp contacts when you install the sub/amp.
ANOTHER NOTE: The amp is NOT bolted or attached in any way to the top of the sub. You can bolt it on there if you wish, but I just let it sit beside the sub in the back hatch.