A lot of the vendors have their special nitch. Sacramento for Wiring, Snyders for Window Regulators & seat springs, Mikes for Oil Filter Kits, etc, etc. etc. etc.
From where I am, shipping is not a question -- they ALL are high -- the joys of living in Alaska! But do check out shipping. Sometimes you can get the same part from different vendors for essentially the same price, the only difference being the shipping.