Update: After we referred tons of people they started cancelling orders and changing the terms on their deal. Bad business I would never ship from this site.
I was able to score 2 free pairs of socks with this one!
Sign up to Ledbury Menswear with this link and you will get a free $50 credit. After you register they will email you a promo code to use to get $50 off. They have pairs of socks for $25 each, so you should be able to get two pairs. No credit/debit card necessary.
Note that this special $50 discount and $50 referral offer is only available through October 6, 2015, at which time it will go back down to a $25 discount with a $115 minimum order requirement.