I've been eyeing the Klipsch 5.1 Ultra for awhile now, only downside is it cost $400

I was checking out the Klipsch website and came upon their parts site
click here

Here is what I found

Ultra Central Channel speaker $ 21.90
Ultra Satellite Channel speaker $ 18.39 (x4)
Control Module $ 33.39
Ultra Speaker wires $ 9.54

Total would be $ 138.39 (okay I was being a little cheap by not getting the speaker grills @ around $3.50 each x5 )

Now does anyone know which Subs are used for the Ultra line ? I'm sure it can't cost $ 250.