Recently, I placed an order for three items from FAC. Two were in stock, shipped - and I was charged for shipping.
Today, the BO'd item arrived with - guess what? - an additional shipping charge - 17% of the value of the $27 part.
I phoned FAC to determine their official policy on shipping & BO'd items. According to FAC, full shipping is charged on items in stock, followed by ADDITIONAL "minimal shipping" on BO'd items.
From my experience, every other company I have dealt with has shipped BO'd items without shipping charges, realizing that they are the ones that have chosen to stock a certain level of product - a business decision that you, the customer, does not get to vote on.
Be warned: FAC has a reputation for advertising items that are not in stock - and, should you order from them, your costs may be far higher than indicated by Web Invoice. I would suggest that you seek out the actual source of these products, and order from those that actually make and have them.
Should Harlen wish to reply to the situation? Invoice number B07043904. No, I don't want any money back - simply state, in public, your policy on backorder shipping costs.