All centers use one secure carrier UPS. Orders are all shipped insured for guaranteed delivery. If you are ordering small items it is recommended to order additional items with your order like oil filters etc. UPS has a flat rate regardless of what you are ordering.Shipping is calculated during check out,you will get a shipping total before any payment is required.
Just in case you are curious as to the wording of my email/comment to them:
Subject: Cardboard manufacturing, hand printed shipping labels?
^ those are the only reasons i can think of to charge $20 to ship 10 small oil filters. You have the best prices, but your outrageous shipping makes it too expensive to buy from you. In other words, i can go buy my stuff, and spend more money on the same part, and get it to my door cheaper because they charge actual shipping. By the time anyone replies to this, i probably will already have done just that, so don't worry about replying, just take note that someone who would've given you money, is now not giving you money due to your wacky shipping calculator.