The problem is unless the buyer and seller are in the same state it really shouldn't be a state sales tax.
I'd opt for something logical like a flat Federal Interstate Sales Tax of 5% that can be collected by states on Interstate transactions, but it's one flat see, not the dizzying array of fees states assess per state, county and city.
Think more how Minimum Wage works, it would be Minimum Tax, set so that it's fair for anyone paying a tax nationwide and simple enough it's not a burden on ecommerce vendors.
Brick and mortars have the advantage of being able to offer instant gratification to customers who want a product sooner rather than later.
Not exactly true.
Often times I can't find what I want in the store and Amazon Prime will have it delivered the next day vs. B&M's that will order it for you to show up 1-2 weeks later.
Heck, I don't even bother going to most of the B&M stores anymore and save on gas and time wasted dealing with incompetent sales people.
Want a book? Amazon will have it on my doorstep in a day or two or I can download it electronically now. Same with music and movies, no new CDs or DVDs for me, instant downloads.
Want totally crazy? I can't even afford to drive to the local Walmart to pick up a shirt or a pair of pants for the price they'll ship them to my door: $0.97! The local Walmart return trip here incurs a $4 bridge toll so if they'll ship it that cheap, I'm staying home.
Same with Amazon Prime, we buy a lot from them and still would even if we got charges sales tax for the sheer convenience alone. You think of it, you order it now in mere minutes, no need to leave the house and waste and hour in a store.
Not to mention the fact that during the cold and flu season some of us with compromised immune systems (damn chemo) find online ordering the safest way to avoid catching a cold.