Do you use Purex Crystals ? If so, here’s a great “Buy 1, Get 1 FREE” coupon. I think you can print it out twice to add to your savings.It’s a great way to stock up on something that you use all the time ! Click here for the coupon. And if you want, enter the Purex Cash Giveaway for a chance to win $500. I have entered their giveaways before and I have won a total of $75 Amazon cash so far!