Well, I'm not sure if this is impressive or depressing but I think I have everyone beat so far.

Retail/Paid
5800/4300

5800 doesn't include retail cost of 12 awg speaker wire, 16 awg speaker wire(which I didn't pay for), sound deadening, materials.
4300 DOES include the price I paid for the sound deadening and materials.
Labor, of course is provided by me and I have no idea how much it would add to the cost. Probaly 1000-2500 I would imagine. I guess I'm in the 'young and stupid' category Dave mentioned.

OH well, you gotta learn somehow!!