The Smartest House has the Edge on sale. This is the lowest I've seen and SD search says the same. Tax in NJ (possibly NY as well). TSH is a business that almost does not exist anymore - they reply to emails, help, suggest, offer returns - easier than anybody else.
If you have reviewed one of their items, they usually email 5% coupon (doesn't expire for months). If you don't have it, you can submit a review Monday morning (or now) and most likely get the coupon same day.