Sounds like an average power rack to me w/ the exception of the dip attachment, which is also the reason it is a good $100-$200 more than the average power rack.
If its not coming with any weights its not worth what they're charging for it imho, I'd shop around and find something cheaper, you don't want to be paying $200 for a
dip station when you could buy a stand-alone one for like $60 or less.
Here is one that suits all the needs of a power rack, and it only costs $279.99.
anyway thats without really looking very hard. Again, shop around a bit first, I'm sure you can easily bring that $499 down to something cheaper and save yourself some cash for a piece of equipment that is just as good.