Start an account at Big Tex and put the Aridus stuff you want on your Wish List. Not only do you get $5 in "points" to use with a new account, those will stack with their usual 10% off coupons.
...that being said, generally whenever there's an Aridus drop you don't want to muck around with making sure the coupons and points stick when the goal is to get the damned purchase confirmed. >.>