I have found the same prices here. It is a little cheaper to ship to a business, but not much. USPS has the flat rate boxes, but by the time you add additional insurance (anything over $50), then you have to pay more, and I find USPS service SUCKS !! My mail carrier didn't deliver a pair of Sitka gloves to me when I met her at the mailbox because she said she couldn't fit the soft envelope in her car, even though it had been scanned earlier that it was "out for delivery" (that's why I met her at the mailbox). She then went back to the Post Office and scanned the package saying there was no safe place to leave item at mailbox, and a notice was "left" for recipient to pick up item at Post Office- No notice was left.
Anyway, prices are going up for shipping.