It's only on stuff that he doesn't carry in-stock, normally. And the shipping is pretty expensive. I think I paid about 8-10 bucks shipping on a little ARS/Stihl replacement blade for my folding handsaw. If it's some he carries, but he's just out of, then he doesn't charge for shipping.
Bailey's has pretty fair prices on the things that I buy there. And they ship pretty fast. They have a warehouse that's only a couple hours drive from my home, so it's usually a 1 or 2 day deal for me to get my stuff.
I give my Stihl dealers a lot of business too... I think I've got 4 of them within a 20 mile radius of here...