I guess it is true what they say about how cheap
The only real problem I've ever had that the local WM is that sometimes they are too helpful.
When I want normal everyday stuff I go to the local WM store and it doesn't bother me if I MAY be paying a little more for a $10 part because I know I probably will find it there (I have a Port Supply card anyway and it may not matter). Maybe I could hunt it down or order it on line and save 10%, but my time is worth more than that. I even normally go to the superstore in Woburn Mass instead of the smaller one in Portsmouth NH, which means I pay sales tax because in NH there isn't sales tax.
Now when I what bigger things that aren't going to be in stock I will search online for the best deal. But even then I don't always go with the lowest price
because Defender is closer and the shipping
often makes up for the difference.
BTW - the reason I don't order online from WM a lot of time is that the site always seems to run kind of slow.