Fry's has a weekly ad showing sale prices on TV's along with further discounts if you sign up for a promo code. Along the top banner of the ad states that We Pay Sales Tax with Promo Code on ALL 4K TV's excluding Clearance and Doorbusters.
I visited Fry's to buy a new 4K TV that was listed on last weeks ad. The sales rep stated that the TV I wanted was not included in the no sales tax offer. I noted the ad that said ALL 4K TV's. The store manager agreed and gave the discount but said he believes it is a mis-print and would put a disclaimer up in the store for further sales.
This weeks ad shows the same no tax on ALL 4K TV's with promo code.
If your store will honor the ad then an extra savings can be had. I saved about $40 on top of the TV's promo code discount. YMMV, no tax is not valid in all states.