Home Labor Day Sales 2018 Amazon Kindle Unlimited: Free 90-Day Trial Labor Day Sales 2018 Amazon Kindle Unlimited: Free 90-Day Trial [Bonus $3 Credit on select eBooks] By ARCOM - 21 September 2018 175 0 SHARE Facebook Twitter Go to the deal page: Amazon Kindle Unlimited: Free 90-Day Trial [Bonus $3 Credit on select eBooks]