Home Columbus Day Amazon Kindle Unlimited Columbus Day Sale: 50% off 6-Month Membership (Now $30) Columbus Day Amazon Kindle Unlimited Columbus Day Sale: 50% off 6-Month Membership (Now $30) By ARCOM - 8 October 2018 116 0 SHARE Facebook Twitter Go to the deal page: Amazon Kindle Unlimited Columbus Day Sale: 50% off 6-Month Membership (Now $30)