It's quite irrelevant as to what you think is a big deal.
Considering, as has been pointed out, you appear to have joined BFC solely to sell knives, you're now doing a fine job of cranking off the very folks who would support you in your knifemaking endeavors.
You, not Mr Brooks, screwed up.
Two weeks IS a big deal. Two weeks without communication from a guy who has my knife and my money is a big deal. Let's say that to some of us here, and that may look like ALL of us except Dawkind in this little conversation, you disappearing (and yes, lack of communication for two weeks will look like that) with our money and our knife looks highly suspicious.
Had you simply taken it upon yourself to inform Mr Brooks of your impending issues, which would have taken perhaps two minutes, he'd be a happy customer.
Whatever he paid for shipping is not an issue at all - you agreed to it, so you don't get to complain about it.
What is an issue is that you kept him waiting for a while, after payment, etc without letting him know where you were in the process.
Perhaps it is the age of the internet which has stripped away patience, but it has also stripped away trust. Since it's very easy for someone to run a con or scam, you as the seller have the onus of trust and a good transaction on your back. It's not the responsibility of the guy who has paid you to track you down.
Your tone here should be concilatory, but instead you are telling him, the guy who was kind enough to buy your handmade knife, out of the literally thousands of knives available, that you value his business so little that it does not matter if he buys your knife or not.
Thank you for making this so simple for the rest of us.