I received an invitation to complete a survey which rewarded me with a 25% discount on full priced products and a free shipping promo code - HAPPYSURVEY.
It appears to be generic so should be good to use by others without having to complete the 30+ questions.
I know Happy Socks is expensive compared to normal socks, but those who work in a corporate/professional industry know how popular these are in the office.
Update: Appears that it does not apply to their limited edition socks or sale items.
price any where would be of assistance