In the case of Delaware there is what is euphemistically called the "Gross Receipts Tax" which is an insidious tax that raises the price of everything, just not at the cash register, which is why it is called a "hidden" sales tax.
I recently spent a week there and just about everything I purchased there was by far more expensive than back here in Virginia. The only exception to that rule were certain items in places like Dollar General. But same brand/same store purchases are shockingly higher there than here. For example I purchased a pound of store brand butter in Food Lion the day before I headed to DE, it was $2.67 including VA sales tax. While there I needed to purchase butter, same Food Lion brand, same size and in "tax free" Delaware it was $3.20.
Which makes it a very interesting state, because it seems that not only does that discourage outsiders from coming into the state to spend money, but it also gives incentive for people IN the state to leave the state to buy things (although it could be that the sales tax in neighboring states are high enough that it cancels out the savings from the lower cost of goods).
Thanks for the info. Truthfully the most time I’ve spent in Delaware is driving through it and of course that didn’t take very long. :-)