WOW, shipping seems to be a real issue. I just did a test case with 20 yards of fabric. Shipped to my home, about 15 miles, the shipping was $10.65. I changed the address to Spokane, Washington, and the shipping was over $24.00. This was priority mail. Is that how priority mail works?
If you read the small print, they say they will use the flat rate envelopes, and adjust the credit card charges. If I were ordering, I would be calling them to verify that will really happen!