I bought mine in California and had it shipped to where I live in Texas. No sales tax.
A retailer can only charge sales tax if they are shipping to a state where they have a brick & morter physical store. If I bought it in Texas and had it shipped to Texas I would have been charged sales tax.
Until about a year ago, Texas residents were never charged sales tax for purchases on Amazon. While Amazon does not have a store in Texas, they do have a distribution center here. The state of Texas finally made them charge sales tax for purchases made from Texas residents.
If I were to be selling products through Etsy, Texas residents would be the only ones I could charge sales tax to. When I helped my son do his California State Income tax form, it had a place where you were supposed to list every purchase you've made either on line or in another state and pay California sales tax on it.