I guess I'm responding a bit late, but I work at NAPA and Im only 17.
It is true, you do have to have a good idea of what a lot of things are and what they go to. Im still learning though. Something new every day. And my discouts (just a geuss) range from like 10% to like 40%.
I bought some Sea Foam yesterday for $5.50 when normal price is like $9.45 I think
