Where would be the best place to purchase the Bassani after-cat x-pipe and their axle-back exhaust?

I have found the aformentioned two sold individually at lmperforrmance for $239 (x-pipe) and the axle-back for $469 (I think this is the one that is not the full cat-back, but actually attaches to their x-pipe).

Total $708. Is this correct?

Thanks in advance.