Naturally I don't buy my supplies at West Marine, even though I have two stores within 5 minutes of me. But, sometimes you run low and need it NOW.
Picking up a few screws is one thing, but if I need to spend decent money, I'll use their price matching policy.
Just pull out a current catalog from Defender, Hamilton Marine, Jamestown, etc. and circle the items. They'll match the price. Usually saves about 30-40%.
The other day I needed some more paint, varnish, thinners, calk. Spent $96.79. Saved $47.15
I still don't like giving money to the evil empire, but the pain is less.