Flash Sale site The Clymb has VivoBarefoots on sale today. Their stock includes everything from the original Gobi to the Gobi II, the Freud II, The One, Stealth, and one or two others. The discounts vary but I see the Gobi at about 35% off.
If you’re not familiar with The Clymb, you’ll first want to sign-up, which is free and gets you on their list to:
a) receive emails about their latest sales (you can quit this at any time), and
b) invite other people and get Clymb credit when friends join and buy something ($10 of credit for you and for them per referral).