No tax except for NJ or NY I think. Shipping is free.
Yes, I know, there was GE for $20 and $35 with double tap. The real deal here is if you need a 3 or even 4 way - you can use your existing old school switch, no need to by companions.
One caveat with these (and many others) is the minimum load required:
"Compatible with LED, CFL, and incandescent bulbs - minimum 15 Watts on load required"
I tested them and they work with smaller load just fine. Then I spoke to Zooz and they said the internal switching circuit may or may not go bad after months/years if the load is lower. I also spoke with the SM because many other switches and relay from different manufacturers have the same warning, even if they don't have it in the manufacturer's manual. They claim they discover this with their personal experience and it holds true for many of the switches. So if you want to be safe, used it with 2 or more LEDs or a single 100w equivalent.
Remember - if you have 5% review coupon you can use it today too.