When I was looking for a setup for my 69 Corvette, I found a pump locally (Cragislist) for $20 with an incorrect diverter valve, but it "looked" correct so I kept it. The pump itself was in "good" shape, but had a black fan on it. The correct repop white fan was $70, the brackets (used) were another $30 and the hoses, clamps and valves, etc... came to a little under $100. The repop smog tubes were the most expensive at $300 a set but they're perfect. So all in all, I have a little over $500 in the system and although it's not "show quality" (things like I painted diverver valve instead of plating it because that cost STUPID money), it's close enough for government work. Especially since I don't "show" the car.
Ed