I just came back from Lowe’s after picking up my 3rd and 4th boxes of these:
The coupon code for “40% off the iris security pack” courtesy of @metfoo (thank you Frank!), which also worked for me for the “Iris Home Automation Pack”, is: 470000000013036
I know that some stores have complained and would not honor the coupon, so this is definitely YMMV, but I had no issue placing an online order for in-store pickup.
The price before tax for both came to $154.80!
A very good deal, IMHO!