-- Dal Slaubaugh who recently retired worked there and gave f-body members a good discount but they are still very reasonable.
-- BIll Markivich -- Super guy to deal with as well and they are very competitive on pricing.
Bob Maguire Chevrolet is also resonable priced on their parts to.. if you want to verify go to www.worldparts.com
and enter your info; thats how I found so many dealers to choose from and they respond quickly.
I find www.gmpartsdirect.com
to make up for their low prices in SHIPPING charges.. I work for a company that gets significant discounts wth UPS, FedEx, and DHL and when you volume ship -- you get a DEAL which they are not passing on to consumers.
Reviewing my records - I bought P/N 12584940 (which IIRC is when I replaced my Oil Pressure Sensor back on 3/23/05) from Van Devere and paid 28.91 for it